WO2023226450A1

WO2023226450A1 - Bim parameter based method for evaluating matching between prefabricated building design and real construction

Info

Publication number: WO2023226450A1
Application number: PCT/CN2023/071122
Authority: WO
Inventors: 罗佳宁
Original assignee: 南京工业大学
Priority date: 2022-08-03
Filing date: 2023-01-06
Publication date: 2023-11-30
Also published as: CN115310182A; LU103216B1

Abstract

The present invention belongs to the technical field of prefabricated building design. Disclosed is a BIM parameter based method for evaluating matching between prefabricated building design and real construction. The method mainly comprises the following steps: constructing a prefabricated building and a BIM model for prefabricated parts thereof, establishing association between parameter design type information of the prefabricated parts in the BIM model and information of real construction, and forming a BIM parameter system by using associated parameter information; and performing quantitative comparison, analysis and calculation on a matching degree between prefabricated building design and the real construction. By means of performing quantitative comparison, analysis and calculation on a matching degree between prefabricated building design and real construction, the quantitative evaluation of an integration degree of the prefabricated building design and construction at an early building design stage is realized.

Description

Matching evaluation method between prefabricated building design and real construction based on BIM parameters

Technical field

The invention belongs to the technical field of prefabricated building design, and in particular relates to a matching evaluation method between prefabricated building design and real construction based on BIM parameters.

Background technique

Prefabricated buildings refer to buildings in which prefabricated components are assembled on site. Specifically, it is based on factory prefabricated production of components and on-site prefabricated installation as the construction model. It is characterized by standardized design, factory production, assembly construction, integrated decoration and information management, and integrates various stages such as design, construction and operation and maintenance. A new construction production method that pursues the goal of maximizing the value of the entire life cycle of the building. The inventor believes that due to the traditional division of the construction industry and the professional division of labor, there are still fragmentation and discontinuity problems in the design and construction of prefabricated buildings, which makes it impossible to accurately evaluate and predict the degree of integration of prefabricated building design and construction. Although digital and information technologies such as BIM and IoT detect and solve problems such as conflicts and contradictions between "staged" design results of various professions and various processes through information integration, model management and data interaction, in order to improve the efficiency of design and construction, The degree of integration and integration, but the discovery and solution of problems rely on multiple rounds of BIM or IoT-based inspection and analysis results (mainly collision inspection), which are characterized by randomness and fragmentation, and usually require further manual analysis. However, due to the lack of systematic understanding of the completeness of construction information and related requirements of various majors, it is difficult for architectural designers to effectively evaluate the specific degree of integration of prefabricated building design and construction in each round, and therefore cannot accurately evaluate and predict specific problems. And carry out targeted deepening and optimization of the design in advance, which to a certain extent reduces the coordination and collaboration efficiency between various disciplines and processes, and affects the final effect of the integration of prefabricated design and construction; secondly, the current BIM technology The application in the design stage of prefabricated buildings is generally for each major to import and merge the "phased" design results of each round into BIM software for repeated testing, analysis and optimization. Although it can help foresee problems that may arise in the construction stage during the design stage , eliminating the workload of design changes and rework, but still focusing on reverse applications. BIM models are mostly converted based on design results exported from commonly used software and customary tools in various professions. The source files referenced when creating BIM models are still limited to non-standard applications. In BIM form, there are some problems such as missing information, low model quality and poor information transmission, which will affect the comprehensiveness and accuracy of BIM detection and analysis results to a certain extent. At the same time, the uniqueness of construction projects determines that repeated testing and optimization results may still cause problems to be missed, making it difficult for professional designers to accurately locate and efficiently solve problems. Once the optimized design results enter the construction stage, design changes and rework are difficult, costly, and inefficient. BIM is difficult to play a role at this stage, while IoT technology plays more of a role in monitoring, early warning, and reminders when specific problems are encountered. Various professionals are still required to carry out on-site remediation. Due to differences in personal experience and professional abilities, it is easy to cause problems such as low construction management efficiency, uncontrollable construction process and unguaranteed construction quality, which affects the integration of prefabricated buildings and design goals. original intention.

To this end, it is necessary to design a matching evaluation method between prefabricated building design and real construction based on BIM parameters.

Contents of the invention

Through research, the inventor found that due to the traditional division of the construction industry and the professional division of labor, the current degree of integration of prefabricated building design and construction cannot be accurately evaluated and accurately predicted in the early architectural design stage, which reduces the efficiency of each profession and each process. coordination and synergy efficiency.

In view of at least one of the above technical problems, the present disclosure provides a BIM parameter-based matching evaluation method between prefabricated building design and real construction. The specific technical solutions are as follows:

A BIM parameter-based matching evaluation method between prefabricated building design and real construction, including the following steps: Step 1: Construct a BIM model of the prefabricated building and its prefabricated components, and compare the parametric design information of the prefabricated components in the BIM model with the real The construction information is associated, and the associated parametric design information is used to form a BIM parameter system. The number of prefabricated component BIM parameter entries that already have parametric design information is sorted out as DCY, and the prefabricated component BIM parameters that are missing parametric design information are sorted out. The number of entries is DCQ; Step 2, set the scope and conditions for matching the prefabricated component BIM parameter design information with the real construction information; Step 3, according to the scope and conditions set in Step 2, combine the existing prefabricated components with Comparative analysis of component BIM parametric design information and real construction information, sorting out the parametric design information that is consistent with the real construction information and counting the quantities. Among them, the number that matches is DCYT, and the number that does not match is DCYF; Step 4, set the formula DP=DCYT/(DCYT+DCYF+DCQ) calculates the matching degree value DP of a single prefabricated component; Step 5, set the matching degree threshold DGY of a single prefabricated component and compare it with the matching degree value DP of a single prefabricated component. If If DP is not less than DGY, it is deemed to be a prefabricated component DGT that conforms to the real construction information. If DP is less than DGY, it is deemed to be a prefabricated component DGF that does not conform to the real construction information. Step 6: Set the formula ZP=DGT/(DGT+DGF) To calculate the matching degree ZP of the overall prefabricated building, this invention is based on the BIM parameter system of the prefabricated building and its prefabricated components. Through quantitative comparison, analysis and calculation of the matching degree between the design of the prefabricated building and the actual construction, it is realized in Quantitative assessment of the degree of integration of prefabricated building design and construction in the early architectural design stage.

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

1. Through quantitative comparison, analysis and calculation of the degree of matching between prefabricated building design and actual construction, it is helpful for designers and construction personnel to quantitatively evaluate the degree of integration of prefabricated building design and construction in the early architectural design stage. Apply BIM to instantly assess the degree of integration between design and construction, guiding them to make efficient, accurate and correct decisions.

2. This invention can realize timely pre-evaluation of the degree of integration of architectural design and real construction in the early stage of prefabricated building design, reduce the number of repeated detection, analysis and optimization, thereby accurately locating BIM models with low matching degrees in advance. Components and their parameter information content are subject to phased, multi-disciplinary pre-collaboration, precise targeted modification and design optimization, thereby increasing the depth of the first design and reducing the number of repeated inspections, analyzes and optimizations.

3. Strengthen and expand the BIM forward design optimization effect of BIM on the design and construction of prefabricated buildings, and provide designers and construction personnel with quantitative tools for scientific optimization. The present invention applies BIM through the BIM parameter system of prefabricated buildings and their prefabricated components. Parameters integrate the architectural design and real construction information of prefabricated buildings and their components, allowing architectural designers and other professionals to use the parameter entries and parameter information of the BIM model and its prefabricated components as an information medium and bridge in the early design stage. , helping architectural designers and other professionals use standardized, complete architectural design and real construction information to carry out BIM forward application of prefabricated building design, reducing the passivity and lag of optimized design, thereby accurately predicting, Locate and solve problems that may arise in the subsequent actual construction, and transform the current BIM reverse application model of "first draw the drawings, then turn over the molds" into the forward BIM application model of "first model, then draw the drawings" to solve the problem of BIM Problems include missing model information, low model quality, and poor information transmission.

Description of the drawings

Figure 1 is a flow chart of the present invention;

Figure 2 is a detailed list of design BIM parameter information of a component group in a certain steel structure project in Embodiment 1 of the present invention;

Figure 3 is a screenshot of the software interface of the present invention when opening the BIM model file of Colunm-01 in Example 1 in Autodesk Revit software;

Figure 4 shows the 9 parameters preset in Embodiment 1;

Figure 5 is a detailed list of project information in the Autodesk Revit software of Embodiment 1;

Figure 6 is a detailed list of design BIM parameter information of a component group in a certain prefabricated reinforced concrete structure project in Embodiment 2 of the present invention;

Figure 7 is a screenshot of the software interface of the present invention when opening the BIM model file of the balcony panel component YTGB-01 of Example 2 in the Autodesk Revit software;

Figure 8 shows the 10 parameters preset in Embodiment 2.

Detailed ways:

In order to better understand the purpose, structure and function of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all implementations. example.

As shown in Figure 1, a BIM parameter-based matching assessment method for prefabricated building design and real construction is designed, including the following steps: Step 1: Construct a BIM model of the prefabricated building and its prefabricated components, and combine the prefabricated components in the BIM model The parametric design information of the component is associated with the actual construction information, and the associated parametric design information is used to form a BIM parameter system. The number of prefabricated component BIM parameter entries that already have parametric design information is sorted out as DCY, and the missing parameters are sorted out. The number of prefabricated component BIM parameter entries of design information is DCQ; Step 2, set the scope and qualification conditions for the matching degree of prefabricated component BIM parameter design information to the real construction information; Step 3, based on the scope set in step 2 and conditions, compare and analyze the existing BIM parametric design information of prefabricated components with the real construction information, sort out the parametric design information that conforms to the real construction information and count the quantities. Among them, the number that meets the requirements is DCYT, and the number that does not meet the requirements is DCYT. is DCYF; step four, set the formula DP=DCYT/(DCYT+DCYF+DCQ) to calculate the matching degree value DP of a single prefabricated component; step five, set the matching degree threshold DGY of a single prefabricated component, and compare it with the matching degree value of a single prefabricated component Compare the matching degree value DP. If DP is not less than DGY, it is determined to be a prefabricated component DGT that conforms to the true construction information. If DP is less than DGY, it is determined to be a prefabricated component DGF that does not meet the true construction information. Step 6: Set the formula ZP =DGT/(DGT+DGF) calculates the matching degree ZP of the overall prefabricated building. This invention is based on the BIM parameter system of prefabricated buildings and their prefabricated components, and uses a quantitative calculation formula for the matching degree between prefabricated building design and actual construction. , search, locate, count and analyze the parameter entries and parameter information of the BIM model and its prefabricated components, helping architectural designers and other professionals to evaluate the degree of integration of the design and construction of prefabricated buildings, thereby accurately locating the parameters in the BIM model in advance For BIM components and their parameter information with low matching degree, precise targeted modification and design optimization can be carried out in stages and through multi-disciplinary pre-collaboration, thereby increasing the depth of the first design and reducing the number of repeated inspections, analyzes and optimizations, so that In the early design stage, architectural design and other professionals can use the parameter entries and parameter information of the BIM model and its prefabricated components as an information medium and bridge to help architectural design and other professionals apply standardized and complete architectural design classes and Real construction information is used for forward application of BIM in prefabricated building design, reducing the passivity and lag of optimized design, thereby accurately predicting, locating and solving problems that may arise in subsequent real construction.

The technical solution proposed in this disclosure provides a quantitative evaluation and analysis method for the degree of integration of prefabricated building design and real construction, which helps design and construction personnel use BIM to instantly evaluate the degree of integration of design and construction, and guides them to make efficient decisions. , accurate and correct decisions, with the following beneficial effects:

This disclosure is based on the BIM parameter system of prefabricated buildings and their prefabricated components. Through the quantitative calculation formula of the matching degree between the prefabricated building design and the actual construction, it searches, locates, counts and analyzes the parameter entries and Parameter information helps architectural designers and other professionals evaluate the degree of integration of design and construction of prefabricated buildings, thereby accurately locating BIM components with low matching values in the BIM model and their parameter information content, and conducting phased analysis of them. , Multi-disciplinary pre-collaboration for precise targeted modification and design optimization, thereby increasing the depth of the first design and reducing the number of repeated inspections, analyzes and optimizations.

Through the BIM parameter system of prefabricated buildings and their prefabricated components, this disclosure uses BIM parameter integration and IoT technology to collect architectural design and real construction information of prefabricated buildings and their components, allowing architectural designers and other professionals to design in the early stage At this stage, the parameter entries and parameter information of the BIM model and its prefabricated components can be used as an information medium and bridge to help architectural designers and other professionals use standardized, complete architectural design and real construction information to carry out prefabricated building design. The forward application of BIM reduces the passivity and lag of optimization design, thereby accurately predicting, locating and solving problems that may arise in subsequent real construction.

The biggest difference from existing integrated methods and technologies for the design and construction of prefabricated buildings based on BIM and IoT technology is that this disclosure expands the main function of BIM parameters as constraining element information and uses them in the early design stage of prefabricated buildings. . The parameters of the BIM model are used as containers to store and represent key design information and real construction information of prefabricated buildings. Therefore, the prefabricated components of prefabricated buildings are real BIM virtual models and can be used as the design basis for prefabricated building design activities. , can also be used as a data basis for quantitative comparison, analysis and calculation of the degree of integration of design and construction. Specifically, it can achieve the following advantages: In the early stage of prefabricated building design, the quantitative calculation formula of the matching degree can be used to evaluate the design and construction of prefabricated buildings. Evaluate and analyze the degree of integration, and guide various majors to collaborate in advance on the BIM parameter entries and parameter information of prefabricated components in the early stage of prefabricated building design, and achieve targeted optimization to achieve "less modifications, more predictions" instead of the current method The "multi-detection, quick modification" design optimization and modification mode based on BIM collision detection; in the early stage of prefabricated building design, it can guide architectural designers and other professionals to use real prefabricated component BIM virtual models to carry out design activities, especially for Architectural designers have established a systematic understanding of the integrity of construction information and related requirements in various disciplines, and transformed the current BIM reverse application model of "first draw, then turn over the mold" into a "first model, then draw" BIM Forward application mode to solve problems such as lack of BIM model information, low model quality, and poor information transmission.

In the above implementation manner, two embodiments are listed to implement the above technical solution:

Example 1

This embodiment uses Colunm-01, a column component in a certain steel structure project, as a carrier to provide a BIM parameter-based matching evaluation method between prefabricated building design and real construction. As shown in Figure 2, a certain steel structure The project includes 2 steel structure columns (Colunm-01, Colunm-02), 3 steel structure beams (Beam-01, Beam-01, Beam-02) and 1 glass curtain wall Wall-01. The matching evaluation method mainly includes Following steps:

Step 1: Use Autodesk Revit BIM software to create a BIM family type file as the BIM model file of the prefabricated component Colunm-01 of the prefabricated building. Create new parameter entries and set parameter attributes in the created BIM family type. The 9 preset parameters are as follows As shown in Figures 3 and 4, the specific contents of the parameter entries and parameter information of the BIM parameter system are:

(1) Vertical: time-based BIM parameters. Architectural design and actual construction information corresponding to the construction process of prefabricated buildings and their components, including planned and actual completion time (minutes/hours/days), completion status (completed/under construction/unfinished), assembly process ( Steps), etc. and other BIM parameters related to the construction process. The plan corresponds to the architectural design information and the actual construction information corresponds to the preferred completion status and planned completion time of this disclosure;

(2) Horizontal: spatial BIM parameters. Architectural design and actual construction information corresponding to the material composition of prefabricated buildings and their components, including design and actual component geometric dimensions (component length, component width, component height), component model description, material physical parameters, detailed composition, etc. and other BIM parameters related to material composition; the design corresponds to architectural design information, and reality corresponds to real construction information. This disclosure prefers component material, component length, component width, and component height;

(3) Vertical: implement BIM parameters. Architectural design and real construction information corresponding to the implementation of prefabricated buildings and their component technology, including the design and real component connection methods, component connection locations, component assembly methods (stacking forms, lifting point locations, etc.), assembly tools, etc., and Other BIM parameters related to technical implementation; the design corresponds to architectural design information, and reality corresponds to real construction information. This disclosure prefers assembly machines, component connection methods, and component connection locations;

Import the above-mentioned nine preferred parameters into the project parameter manager of the Revit software, select the column component Colunm-01, enter the parameter values in its property bar in sequence, and then open the software schedule, as shown in Figure 5, check the parameter information. Ensure that the virtual construction parameters meet the design intent to provide data support for the real construction parameters of subsequent projects. Each parameter entry and parameter information in the BIM model file needs to correspond to the two major categories of prefabricated building design and real construction information. , and define and create titles with multiple parameter entries, and then use the defined and created parameter entries and corresponding parameter information to form a BIM parameter system. This BIM parameter system and the parameter entries in it can guide the thermal design of the building. Designers from various professions carry out relevant designs, and enter the prefabricated building design and real construction information into corresponding parameter entries in the form of parameter information, create prefabricated building design results for each profession, and sort out the prefabricated components with existing parameter information. The number of BIM parameter entries is DCY, and the number of BIM parameter entries of prefabricated components with missing parameter information is sorted out is DCQ;

Step 2: Set the scope and conditions for determining the degree of matching between prefabricated component BIM parameter design information and real construction information;

The conditions for determining the matching degree between BIM parameter design information and real construction information of prefabricated components are: the design information of BIM parameters is statistically consistent with the real construction information; the design information of BIM parameters is consistent with the text description of real construction information ; The image expression of the design information of BIM parameters is consistent with that of real construction information; any other relevant identification methods and technologies used to determine that the design information of BIM parameters is consistent with the content of real construction information;

The sources of real construction information collection in the second step also include the real construction information of prefabricated buildings and their prefabricated components collected by computer vision technology. Computer vision technology includes radio frequency identification, code identification, laser scanning and image capture. The present disclosure Among them, the real construction information also includes information about the prefabricated components in the factory manufacturing, mid-transit transportation and on-site construction stages. Preferably, the handheld device is used to scan the RFID chip or the pasted QR code in each prefabricated component to collect the information during the factory manufacturing and mid-transit transportation. and information on on-site construction phases. Based on this, improve the prefabricated building BIM model established using Autodesk Revit software;

After the real construction information is tracked and collected, it is fed back to the BIM cloud platform for information management based on IoT technology. In this disclosure, the BIM cloud platform can be Autodesk BIM 360, which analyzes and counts the real construction information of prefabricated buildings and their components based on IoT technology. The collection can be integrated with the BIM cloud platform. The real construction (parameter) information of prefabricated buildings and their components can be tracked and collected and then uploaded and fed back to the BIM cloud platform for information management, analysis and statistics, and fed back to various professional BIM Relevant BIM parameters of each prefabricated component in the model.

Furthermore, the acquisition of real construction information in this embodiment can rely on the BIM cloud platform and the Internet of Things technology using QR codes or RFID chips as carriers. By scanning the component information QR codes or RFID chips, the real construction information can be obtained. The information during construction is tracked and fed back synchronously, back to the BIM cloud platform, and the BIM model of the prefabricated building and its prefabricated components, so as to compare the BIM parameter information between the design type of prefabricated building components and the actual construction type. The specific implementation steps are as follows:

In the Revit software, the BIM model of a component group in a certain steel structure project in Embodiment 1 is exported through the corresponding BIM cloud platform plug-in in the Revit software, and imported into the BIM cloud platform to generate a model for tracking and collecting each assembly. BIM parameter information QR code or RFID chip for real construction type building components;

Paste or embed the QR code or RFID chip into the corresponding component as a carrier and basis for tracking component information. This process can be implemented at different stages such as component factory delivery, component transfer, or component assembly according to needs;

During the real construction process, use the mobile phone APP to scan the QR code of the corresponding component, and upload the image data of the real construction on site to the BIM cloud platform. During the manual comparison between virtual construction and real construction, relevant data can be extracted from the platform.

The biggest difference from the existing integrated methods and technologies for the design and construction of prefabricated buildings based on BIM and IoT technology is that the present invention expands the main function of BIM parameters as constraining element information, and expands the application of IoT technology to collect real construction types. The purpose of the information is to use it in the pre-design stage of prefabricated buildings. The parameters of the BIM model are used as containers to store and represent key design information and real construction information of prefabricated buildings. Therefore, the prefabricated components of prefabricated buildings are real BIM virtual models and can be used as the design basis for prefabricated building design activities. , and can also be used as a data basis for quantitative comparison, analysis and calculation of the degree of integration of design and construction.

Step 3: According to the scope and conditions set in Step 2, compare and analyze the existing prefabricated component BIM parameter entries and their parameter information with the real construction information, sort out the parameter entries and their reference information that are consistent with the real construction information, and compile statistics. Quantity, where the quantity that matches is DCYT and the quantity that does not match is DCYF;

Among them, manual inspection is used to compare and analyze the design information and real construction information of BIM parameter entries and parameter information of prefabricated buildings and their prefabricated components. That is, the manual inspection method includes exporting prefabricated components. BIM parameter entries and parameter information are subject to manual review, as well as all other related manual inspection methods. The specific contents of the manual inspection methods are:

(1) Open the prefabricated building BIM model in Autodesk Revit software, select New Details List under the View menu, and select all related prefabricated component BIM family types, that is, divide the column component Colunm-01 into the beam component Beam- 01×2, beam component Beam-02, column component Colunm-01, column component Colunm-02, and wall component Wall-01, determined based on the BIM parameter system of the prefabricated building and its prefabricated components, combined with the matching degree set in step 3 Scope: Use Revit software to export a detailed list containing BIM parameter entries and parameter information of prefabricated components from the prefabricated building design results (BIM model);

(2) Manually review the BIM parameter entries and parameter information of all prefabricated components in the exported schedule, and count the number of parameter entries with missing parameter information (DCQ) and the number of parameter entries with existing parameter information (DCY); this disclosure , the comparison results show that for each component, the existing parameter information entries are 9, and the missing parameter information entries are 0, that is, DCY=9, DCQ=0.

(3) Based on the matching degree determination conditions set in step 4, compare the prefabricated component BIM parameter entries and parameter information in the exported detailed list one by one to determine whether the prefabricated component BIM parameter design class and the actual construction class information match the same .

As shown in Table 1, through the matching analysis and evaluation calculation of BIM parameter information between the beam component Beam-01 virtual design class and the real construction class, in this disclosure, the component length parameter in the transverse space parameter in Beam-01 does not match the preset. This is a statistical inconsistency between the design information of BIM parameters and the real construction information; the assembly machine parameters in the vertical implementation parameters are inconsistent with the presets, and the text description of the design information of BIM parameters is inconsistent with the real construction information.

Table 1 Beam component Beam-01

As shown in Table 2, the matching analysis and evaluation calculation of BIM parameter information between virtual design class and real construction class of beam member Colunm-01. For Colunm-01, the actual completion time parameters and vertical implementation class parameters in the longitudinal time parameters The assembly machine parameters in are inconsistent with the presets, which also belongs to the inconsistency between the text descriptions of the design information of the BIM parameters and the real construction information; and the component connection method parameters in the vertical implementation parameters are inconsistent with the presets, which is the inconsistency of the BIM parameters. The image expressions of design information and real construction information are inconsistent.

Table 2 Column component Column-01

Beam component Beam-01 has parameter DCY=9 and missing parameter DCQ=0. The 7 parameter information in the real construction conforms to the virtual design, but 2 parameters do not, so its DCYT value is 7 and DCYF value is 2; column Component Colunm-01 has parameter DCY=9 and missing parameter DCQ=0. Six parameter information in real construction conforms to the virtual design, but three parameters do not, so its DCYT value is 6 and DCYF value is 3.

Furthermore, in this disclosure, the comparative analysis and quantity statistics of the design information and the actual construction information of the BIM parameter entries and parameter information of the prefabricated buildings and their prefabricated components can also be carried out using a combination of manual inspection and automatic detection. That is, use the BIM model quality inspection software to automatically inspect the prefabricated building design results (BIM model) and its prefabricated component BIM parameter entries and parameter information and export the inspection results, as well as all other related automatic inspection methods, the automatic inspection method The specific content is:

(1) Export the Revit software model of this embodiment into an IFC format file, and import the file into the Solibri Model Checker (SMC) software, that is, import the BIM model into the BIM model quality inspection software. In this disclosure, the BIM model quality inspection software It can be Solibri Model Checker. Based on the BIM parameter system of the prefabricated building and its prefabricated components, select the BIM parameter items and parameter information that can be detected by the BIM model quality inspection software from the matching degree certification range set in step 2, and set Set the corresponding parameter information integrity detection rules and adjacent component tolerance detection rules in the Ruleset Manager of the SMC software. Preferably, take the setting rules for spatial BIM parameter entries of prefabricated components as an example. The component geometric dimensions The detection rules for parameter entries are whether they meet the tolerance values of other adjacent prefabricated components; the detection rules for detailed construction parameter entries are whether there is enough space at the connection position of the components, etc., and then in the Model Checker module Run the inspection program, finally obtain the test results and export the test results from the BIM model quality inspection software;

(2) Export a detailed list for the remaining BIM parameter entries and parameter information that cannot be detected by the BIM model quality inspection software in the matching degree determination range set in step 2;

(3) Based on the exported test results and detailed tables, sort out the existing and missing prefabricated component BIM parameter entries and count the quantities (existing quantity = DCY, missing quantity = DCQ);

(4) According to the matching degree determination conditions set in step 2, manually review the test results of whether the BIM parameter design information exported from the BIM model quality inspection software conforms to the real construction information, and check the BIM prefabricated components in the detailed list. Parameter entries and their parameter information are compared one by one to determine whether the design information matches the real construction information. Combining the comparison analysis and quantitative statistical results of the above manual inspection and automatic detection;

All six components in this disclosure passed the test, that is, the parameter entries and parameter information conform to the virtual design, and there are no missing items. Therefore, for the automatic detection of parameter information in Example 1, DCY=9, DCQ=0. The results can be combined with manual verification to numerically calculate the matching degree of individual components and the matching degree of the overall project.

Step 4: Set the formula DP=DCYT/(DCYT+DCYF+DCQ) to calculate the matching degree value DP of a single prefabricated component. That is, the matching degree of a single prefabricated component is equal to the number of BIM parameter entries of a single prefabricated component that conforms to the real construction information divided by The sum of the number of BIM parameter entries of a single prefabricated component, and the matching degree of a single prefabricated component is the proportion of the closeness of the BIM parameter design information of a single prefabricated component to the real construction information;

Step 5: Set the matching degree threshold DGY of a single prefabricated component. The threshold is used to determine whether a single prefabricated component can be recognized as a prefabricated component that conforms to real construction information, and the number of individual prefabricated components is included in the calculation of the matching degree of the overall prefabricated building. Calculate it with the formula and compare it with the matching degree value DP of a single prefabricated component. If DP is not less than DGY, it is deemed to be a prefabricated component DGT that conforms to the real construction information. If DP is less than DGY, it is deemed not to meet the real construction information. Prefabricated components DGF;

The setting of the matching degree threshold of a single prefabricated component (ratio: DGY) can be dynamically controlled and adjusted based on the specific professional capabilities, personal experience and implementation capabilities of each professional in different prefabricated construction projects. Includes two types of control and adjustment factors:

(1) Directly adjust the specific proportion value of the threshold itself (0%-100%) without adjusting the BIM parameter weight coefficient;

(2) Directly set the specific proportion value of the threshold itself (0%-100%), and adjust the weight coefficient of each parameter entry and its parameter information in the prefabricated component BIM parameter system. The weight coefficient can be based on each parameter entry and its parameter information. Parameter information dynamically controls and adjusts the actual impact of different prefabricated construction projects; preferably, the weight coefficient of time-type BIM parameter entries is 1, the weight coefficient of space-type BIM parameter entries is 0.8, and the weight coefficient of implementation-type BIM parameters is adjusted The weight factor of the entry is 1.2.

Step 6: Set the formula ZP=DGT/(DGT+DGF) to calculate the matching degree ZP of the overall prefabricated building. That is, the matching degree of the overall prefabricated building is equal to the number of prefabricated components that conform to the real construction information divided by the prefabrication of the prefabricated building. The total number of components, the matching degree of the overall prefabricated building is the proportion of prefabricated components that conform to the real construction information to all the prefabricated components of the prefabricated building, the matching degree of a single prefabricated component and the matching degree of the overall prefabricated building can be used in any format expressed in proportion. Preferably, the proportional expression format of the matching degree includes: 0%-100%, 0.0-1.0, 0/1-1/1, etc.

According to the inspection results of SMC software, this disclosure shows that Beam-01 and Beam-02, a total of three components, do not meet the design requirements of the minimum distance tolerance of 5mm between components, so return to the Revit design model, adjust the corresponding component sizes in sequence, and change Beam- The component length parameter value of 01 is adjusted from 2800 to 2790, and the component length parameter value of Beam-02 is adjusted from 2400 to 2390.

After the Revit model parameters are modified, the optimized model is imported into the SMC software again in IFC format for component adjacent tolerance testing to verify the optimization design results. After being tested again by the SMC software, all six components in this disclosure have passed the test, so that this optimized design can achieve the set goals. On the other hand, the component length parameters of Beam-01 and Beam-02 in the real construction parameter statistics table can also prove from the side that the optimized design meets the requirements of real conditions.

After overall research and judgment, the quantitative calculation process of the virtual and real matching degree of a single component and the virtual and real matching degree of the entire project is as follows:

Situation 1: Design class parameter entries have no weight division

Taking the beam component Beam-01 as an example, according to Table 1, DCYT=7, DCYF=2, the matching degree value of a single component DP=DCYT/(DCYT+DCYF+DCQ)=7/(7+2+0)= 77.8%. In the same way, the DP value of Beam-02 is calculated to be 77.8%.

Taking the column component Column-01 as an example, according to Table 2, DCYT=6, DCYF=3, the matching degree value of a single component DP=DCYT/(DCYT+DCYF+DCQ)=6/(6+3+0)= 66.7%. In the same way, the DP value of Column-02 is 66.7% and the DP value of Wall-01 is 77.8%.

If DGY (single prefabricated component matching degree threshold) is set to 70%, then in patent example 1, the DP values of 4 components are greater than or equal to DGY, and the DP values of 2 components are less than DGY, so 4 components are recognized. In order to be prefabricated components that comply with the real construction information, that is, DGT=4, there are two types of components that are identified as prefabricated components that do not comply with the real construction information, that is, DGF=2. In summary, ZP (matching degree of integrally prefabricated building) of the present disclosure=DGT/(DGT+DGF)=4/(4+2)=66.7%.

Scenario 2: Assign weight coefficients to design parameter entries

If the weight coefficient of BIM parameter entries and parameter information is adjusted, it is assumed that the weight coefficient of the time-type BIM parameter entry is adjusted to 1; the weight coefficient of the spatial-type BIM parameter entry is 0.8; and the weight coefficient of the implementation-type BIM parameter entry is 1.2.

Then the beam member Beam-01 in Table 2 has DP=(3×1+2×0.8+2×1.2)/9=77.8%. Similarly, the DP value of Beam-02 is 77.8%, the DP value of Colunm-01 is 66.7%, the DP value of Colunm-02 is 66.7%, and the DP value of Wall-01 is 80%. Therefore, the DP values of Beam-01, Beam-02 and Wall-01 are greater than the threshold DGY (70%), and they are prefabricated components that conform to real construction information, that is, DGT=4 and DGF=2. In summary, the matching degree of the overall prefabricated building in the patent example 1 project is ZP=4/4+2=66.7%.

Example 2

As shown in Figures 6 to 8, this disclosure uses the balcony board component YTB-01 in a certain prefabricated concrete structure project as a carrier to provide a matching evaluation method between prefabricated building design and real construction based on BIM parameters, wherein, As shown in Figure 6, the precast concrete structure project includes 1 precast concrete balcony panel component YTB-01, 1 precast concrete balcony partition YTGB-01, and 2 precast concrete balcony railings YTLB-01 and YTLB-02 , a component group composed of a total of 4 components.

The setting of parameter design information takes the precast concrete balcony slab component YTB-01 as an example. Ten types of parameter entries in three categories are preset in advance, as shown in Figures 7 and 8, including horizontal space parameters (component material, component length, Component width and component height), vertical time parameters (completion status, planned completion time), vertical implementation parameters (support point position, component connection position, component connection method, assembly equipment).

Import the above parameters into the project parameter manager of the Revit software, select the precast concrete balcony slab component, enter the parameter values in the property bar, and then open the software schedule to check the parameter information to ensure that the virtual construction parameters meet the design intent, which can be used for subsequent projects Real construction parameters provide data support;

In the Revit software, the BIM model of a component group of the present disclosure is exported through the corresponding BIM cloud platform plug-in in the Revit software, and imported into the BIM cloud platform to generate a real construction class for tracking and collecting each prefabricated building component. BIM parameter information QR code or RFID chip; paste or embed the QR code or RFID chip into the corresponding component as the carrier and basis for tracking component information. This process can be implemented according to the requirements during component delivery, component transfer or component assembly. and other different stages; during the real construction process, use the mobile phone APP to scan the QR code of the corresponding component, and upload the image data of the real construction on site to the BIM cloud platform, which can be extracted from the platform during manual comparison between virtual construction and real construction. Relevant information;

Export the disclosed virtual construction parameter information detailed table in the Revit software, manually review the real construction information of the prefabricated component BIM parameters and generate the disclosed real construction parameter information statistical table, and review whether the prefabricated component BIM parameter design class matches the real construction class information. consistent.

In this disclosure, it can be seen from the review that for the precast concrete balcony panel component YTB-01, the existing parameter information entry is 9 and the missing parameter information entry is 1, that is, DCY=9 and DCQ=1. The DCY value of the other three components is 10 and the DCQ value is 0.

Taking the precast concrete balcony board component YTB-01 as an example, the matching analysis and evaluation calculation of BIM parameter information between the virtual design class and the real construction class of the precast concrete balcony board are shown in Table 3:

Table 3 Matching analysis of precast concrete balcony plate YTB-01

Then, the component length parameters in the horizontal space parameters of the precast concrete balcony slab component YTB-01 are inconsistent with the presets. This is a statistical inconsistency between the design information of BIM parameters and the real construction information; the assembly in the vertical implementation parameters The machine tool parameters do not match the presets. This means that the design information of the BIM parameters is inconsistent with the text description of the real construction information.

It can be seen that the existing parameter DCY=9 and the missing parameter DCQ=1. The 7 parameter information in the real construction conforms to the virtual design, but 2 parameters do not, so the DCYT value is 7 and the DCYF value is 2.

Taking the precast concrete balcony railing YTLB-01 as an example, the matching analysis and evaluation calculation of the virtual design and real construction BIM parameter information of the precast concrete balcony railing component YTLB-01 are shown in Table 4:

Table 4 Matching analysis of precast concrete balcony railing YTLB-01

Then, the component length parameters in the horizontal space parameters of the precast concrete balcony railing YTLB-01 are inconsistent with the presets. This is a statistical inconsistency between the design information of the BIM parameters and the real construction information; the actual completion of the longitudinal time parameters The assembly machine parameters in the time parameters and vertical implementation parameters are inconsistent with the presets. This is because the design information of the BIM parameters is inconsistent with the text description of the real construction information; the component link positions in the vertical parameters are not consistent with the presets. This is a case of The design information of BIM parameters is inconsistent with the image expression of real construction information.

It can be seen that the existing parameter DCY=10, the missing parameter DCQ=0, 6 parameter information in the real construction conforms to the virtual design, and 4 parameters do not conform, so the DCYT value is 6 and the DCYF value is 4.

Based on the manual inspection results of the disclosed virtual design BIM parameter information detailed table and the real construction BIM parameter information statistical table, as well as the automatic detection results of the SMC software, there are three types of component length, component width and component height in the horizontal space parameters. The parameters can be automatically detected through the SMC software, and the other seven parameters need to be manually checked to draw conclusions. The specific process of the automatic detection results of the SMC software is as shown in Embodiment 1.

Situation 1: Design class parameter entries have no weight division

Taking the precast concrete balcony board component YTB-01 as an example, according to Table 3, DCYT=7, DCYF=2, the matching degree value of a single component DP=DCYT/(DCYT+DCYF+DCQ)=7/(7+2+ 1)=70%. Similarly, after calculation, the DP value of the precast concrete balcony partition board (YTGB-01) is 70%, the DP value of the precast concrete balcony railing YTLB-01 is 60%, and the DP value of the precast concrete balcony railing YTLB-02 is 70%.

If DGY (single prefabricated component matching threshold) is set to 70%, then the DP values of 3 components are greater than or equal to DGY, and the DP value of 1 component is less than DGY. Therefore, 3 components are identified as meeting the real construction category. Among the prefabricated components of the information, that is, DGT=3, there is one component that is identified as a prefabricated component that does not conform to the real construction information, that is, DGF=1. To sum up, ZP (matching degree of integrally prefabricated building)=DGT/(DGT+DGF)=3/(3+1)=75% in this disclosure.

Scenario 2: Assign weight coefficients to design parameter entries

Then the precast concrete balcony railing component YTLB-01 has DP=(3×1+1×0.8+2×1.2)/10=62%. Similarly, the DP value of the precast concrete balcony slab component YTB-01 is 74%, the DP value of the precast concrete balcony partition YTGB-01 is 68%, and the DP value of the precast concrete balcony railing YTLB-02 is 74%. Therefore, the DP value of precast concrete balcony board component YTB-01 and precast concrete balcony railing YTLB-02 is greater than the threshold DGY (70%), and they are prefabricated components that comply with real construction information, that is, DGT=2, DGF=2. In summary, the matching degree of the overall prefabricated building of this disclosed project is ZP=2/2+2=50%.

It is understood that the present invention has been described through some embodiments. Those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, the features and embodiments may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the present invention.

Claims

A method for evaluating the matching of prefabricated building design and real construction based on BIM parameters, which is characterized by including the following steps:

Step 1: Construct a BIM model of the prefabricated building and its prefabricated components, associate the parametric design information of the prefabricated components in the BIM model with the actual construction information, use the associated parametric design information to form a BIM parameter system, and sort out The number of BIM parameter entries for prefabricated components that already have parametric design information is DCY, and the number of BIM parameter entries for prefabricated components that are missing parametric design information is sorted out and is DCQ;

Step 2: Set the scope and conditions for determining the degree of matching between prefabricated component BIM parameter design information and real construction information;

Step 3: According to the scope and conditions set in Step 2, compare and analyze the existing BIM parametric design information of prefabricated components with the real construction information, sort out the parametric design information that is consistent with the real construction information, and count the quantities. Among them, The quantity that matches is DCYT and the quantity that does not match is DCYF;

Step 4: Set the formula DP=DCYT/(DCYT+DCYF+DCQ) to calculate the matching degree value DP of a single prefabricated component;

Step 5: Set the matching degree threshold DGY of a single prefabricated component and compare it with the matching degree value DP of a single prefabricated component. If DP is not less than DGY, it is deemed to be a prefabricated component DGT that conforms to the real construction information. If DP is less than DGY , then it is determined that the prefabricated component DGF does not conform to the real construction information;

Step 6: Set the formula ZP=DGT/(DGT+DGF) to calculate the matching degree ZP of the overall prefabricated building.
The BIM parameter-based matching evaluation method between prefabricated building design and real construction according to claim 1, characterized in that the BIM parameter design type information of the prefabricated components includes time type BIM parameters, space type BIM parameters, and implementation type BIM parameters; the time BIM parameters correspond to the architectural design and real construction information of the construction process; the space BIM parameters correspond to the architectural design and real construction information of material composition; the implementation BIM parameters correspond to the assembly type Architectural design and real construction information realized by building and component technology.
The matching assessment method between prefabricated building design and real construction based on BIM parameters according to claim 1, characterized in that in the second step, the prefabricated component BIM parameter design type information is set to meet the matching degree identification conditions of the real construction type information. The design information including BIM parameters is statistically consistent with the actual construction information.
The matching assessment method between prefabricated building design and real construction based on BIM parameters according to claim 1, characterized in that in the second step, the prefabricated component BIM parameter design type information is set to meet the matching degree identification conditions of the real construction type information. The design information including BIM parameters is consistent with the text description of the real construction information.
The matching assessment method between prefabricated building design and real construction based on BIM parameters according to claim 1, characterized in that in the second step, the prefabricated component BIM parameter design type information is set to meet the matching degree identification conditions of the real construction type information. The design information including BIM parameters is consistent with the image expression of real construction information.
The BIM parameter-based matching evaluation method between prefabricated building design and real construction according to claim 1, characterized in that the basis for creating the design information of the prefabricated building and its components in the second step includes prefabricated construction engineering projects specific requirements and needs.
The matching assessment method between prefabricated building design and real construction based on BIM parameters according to claim 1, characterized in that in the second step, the real construction information collection source includes existing technical data related to prefabricated components, and the Technical information includes technical drawings, technical descriptions, and construction instructions of prefabricated components.
The matching evaluation method between prefabricated building design and real construction based on BIM parameters according to claim 7, characterized in that in the second step, the real construction information collection source also includes prefabricated buildings collected by computer vision technology and Information on the actual construction of its prefabricated components.
The method for matching evaluation between prefabricated building design and real construction based on BIM parameters according to claim 1, characterized in that in the second step, the real construction information is tracked and collected and then fed back to the BIM cloud platform for information based on IoT technology. Management, analysis and statistics.
The method for evaluating the matching of prefabricated building design and real construction based on BIM parameters according to claim 1, characterized in that in the third step, the prefabricated component BIM parameter entries and their parameter information are compared and analyzed manually with real construction information. Conduct inspection and/or automatic detection by BIM model quality inspection software.