Method for automatically remeasuring construction deviation of building structure and checking and accepting model

Abstract

The invention discloses a method for automatically remeasuring construction deviation of a building structure and checking and accepting a model. The method comprises: setting a building coordinate base point; setting a retest path and collecting retest data; performing data deviation analysis on the retest data and the digital building model; forming a building entity structure deviation analysis report; and finally, the digital building model is delivered. The method for automatically retesting the construction deviation of the building structure and checking and accepting the model has the following beneficial effects that the retesting efficiency and the quality control of the building structure can be improved, the subsequently delivered digital building model is more accurate, and the method has the characteristics of convenience and simplicity in use, high accuracy and high efficiency, and the calculation result is automatically calculated by a computer. And the precision and the breadth of the retest of the building entity structure are greatly improved, so that the method has wide social and economic benefits.

Description

Technical Field

[0001] The invention belongs to the technical field of temporary auxiliary structure design and construction, and in particular relates to a method for automatically re-measuring construction deviations of building structures and model acceptance. Background Art

[0002] In the existing technology, building structure re-survey mostly adopts manual re-survey methods, but for large-scale buildings, there are problems such as slow efficiency, incomplete re-survey, and deviation in accuracy. For digital building models used for delivery, they cannot fully reflect the actual status of the actual physical structure, but are directly delivered using the model established by the design drawings.

[0003] Specifically, the defects of the existing technology are mainly manifested in the following aspects. First, the traditional building structure re-measurement method is relatively simple and lacks flexibility and adaptability. This leads to problems such as inaccurate precision, low efficiency, and incomplete re-measurement in actual construction. Secondly, for large-scale building complexes, a large amount of manpower and material resources are required in the re-measurement process. However, the re-measurement method of the existing technology does not have a fast and convenient method, and often fails to meet actual needs.

[0004] Furthermore, existing model acceptance processes suffer from several other shortcomings. For example, during the construction phase, a lack of effective information management makes it difficult to conduct real-time inspections of construction site entities and update models. This leads to various issues during construction, such as delayed model updates and discrepancies between the model and the site. Furthermore, the model modification process requires manual revision of the aforementioned building deviation results from manual re-measurement, which also presents the same problems as manual re-measurement. These issues impact the efficiency and quality of model delivery and require an effective solution. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a method for automatically re-measuring construction deviations of building structures and model acceptance.

[0006] To achieve the above-mentioned object, the method for automatically re-measuring construction deviations of building structures and model acceptance provided by the present invention comprises the following steps performed in sequence:

[0007] S1. Set the building coordinate base point and convert it into three-point spatial coordinates. Then, establish a digital building model and Beidou positioning base point based on the building coordinate base point and the three-point spatial coordinates to form a unified coordinate system.

[0008] S2. Disassemble the digital building model according to the on-site construction progress and upload it to the analysis platform. Then, set the re-measurement path and re-measurement method according to the unified coordinate system, and use the acquisition equipment to collect re-measurement data of the building physical structure along the re-measurement path;

[0009] S3. Uploading the remeasured data of the building physical structure to the analysis platform and performing real-time deviation analysis on the data of the digital building model using coordinate points to obtain the deviation value of the two;

[0010] S4. Classify and summarize the deviation values ​​of the above two items in combination with construction specifications and acceptance standards to form a building entity structure deviation analysis report;

[0011] S5. Based on the above-mentioned building physical structure deviation analysis report, a problem list is formed. After the problem list is confirmed, it is associated and modified with the digital building model to complete the deviation verification of the building physical structure, and finally the digital building model is delivered.

[0012] In S1, the specific method of setting the building coordinate base point and converting it into three-point spatial coordinates, and then establishing a digital building model and Beidou positioning base point based on the building coordinate base point and the three-point spatial coordinates to form a unified coordinate system is:

[0013] The method of setting the building coordinate base point is to first locate the site coordinate base point according to the coordinate system provided by the design drawings, then locate the building coordinate base point, and then locate the detailed structure coordinate base point, which will be used as the subsequent coordinate reference point;

[0014] Since the building positioning is mostly determined by axis coordinates and elevation coordinates, three-point coordinates are required when establishing the spatial model. Therefore, the building coordinate base points need to be converted into three-point coordinates (x, y, z).

[0015] Then, a digital building model is established based on the converted three-point spatial coordinates; the modeling method should be different according to the different characteristics of the components;

[0016] Then, the Beidou positioning base point is set according to the building coordinate base point and the three-point coordinates of space, so that the Beidou positioning base point and the building coordinate base point adopt a unified coordinate system, and the Beidou positioning base point is tested for coordinates to ensure its error accuracy. The method is to use the Beidou positioning laser to scan the building coordinate base point position, thereby collecting coordinate points and setting test points. The test points are usually re-measured at 3 or more points. The collected test points are placed at the above points using a manual total station, and the errors between the two are checked to ensure that the error is controlled within ±1cm. The purpose is to make the coordinate system of the digital building model consistent with the coordinate system of the Beidou positioning re-measurement data collection, form a unified coordinate system, and provide key basic data support for subsequent steps.

[0017] In S2, the specific method of disassembling the digital building model according to the on-site construction progress and uploading it to the analysis platform, then setting the re-measurement path and re-measurement method according to the unified coordinate system, and using the acquisition equipment to collect re-measurement data of the building physical structure along the re-measurement path is as follows:

[0018] Disassemble the digital building model according to the actual construction progress on site and the physical structure of the building that needs to be re-measured. During the disassembly, separate the physical structure of the building that needs to be re-measured on site into separate components according to their categories.

[0019] The disassembled digital building model is then uploaded to the analysis platform; the analysis platform is a software plug-in based on Revt software and secondary developed using Python language;

[0020] Then, based on the above-mentioned unified coordinate system and the location of the building entity structure that needs to be re-surveyed on site, a reasonable re-survey path and re-survey method are set up under the condition of a certain working surface; the re-survey path includes fixed-position acquisition and mobile path acquisition; among them, fixed-position acquisition refers to the selection of fixed points that can meet the needs of collecting building entity structure data based on the characteristics of the building entity structure that needs to be re-surveyed and the performance of the acquisition equipment, and setting them on the acquisition equipment, and using Beidou positioning to directly display the points on site for fixed point placement, and then using the acquisition equipment to collect data, which is usually suitable for building structures with smaller areas or closed factories; fixed-position acquisition should also serve as a supplementary point for mobile path acquisition. For building entity structures with complex structures or too large an area, secondary data collection of complex area positions should be carried out after mobile path acquisition to ensure the accuracy and precision of the collected data; mobile path acquisition is suitable for building entity structures with large areas and relatively conventional structures, and data collection is carried out by manually using backpack-type laser scanning equipment to patrol or inspect the site along the re-survey path.

[0021] In S3, the uploading method includes two methods: using the built-in 5G module or connecting to the internal network for uploading; the coordinate point method uses a unified spatial three-point coordinate (x, y, z) to represent it; the deviation analysis includes coordinate point plane deviation analysis and elevation deviation analysis. The method is to use the spatial gap between the points and surfaces formed by the re-measured data of the building entity structure and the digital building model to calculate the difference between the two as the deviation value. The deviation value includes the detailed size, elevation, plane position and structural line type of the building entity structure.

[0022] In S4, the specific method of classifying and summarizing the deviation values ​​of the above two items in combination with the construction specifications and acceptance standards to form a building entity structure deviation analysis report is:

[0023] The maximum deviation value of the relevant construction specifications and acceptance standards of each building entity structure is input, and then the deviation value and deviation location are formed into a building entity structure deviation analysis report according to the construction specifications and acceptance standards, and classified and summarized. The report includes the name and size of the building entity structure location, deviation coordinates and absolute difference value. If the difference between the data of the building entity structure at a certain location and the data of the digital building model is less than the maximum deviation value, the building entity structure data is named using the location name of the digital building model; if the difference between the data of the building entity structure and the data of the digital building model is greater than the maximum deviation value, the location name can be manually set. The coordinates involved above are all absolute coordinates obtained through a unified coordinate system, and the absolute difference value is usually expressed as a plane position offset and an elevation offset, both of which are obtained by comparing the absolute coordinates.

[0024] In S5, a problem list is generated based on the building physical structure deviation analysis report. After the problem list is confirmed, it is associated with and modified in the digital building model to complete the deviation verification of the building physical structure and finally deliver the digital building model. The specific method is:

[0025] According to the project management process, the construction party will conduct a self-verification of the above-mentioned building physical structure deviation analysis report, and the supervisor will review it. The owner will confirm the re-measured building physical structure data to form a problem list. There are two ways to confirm: first, the deviation value is allowed to exist and it will not affect the use of the building physical structure; second, if the deviation value is too large, corrective measures should be taken immediately. If the deviation value is allowed to exist, select Y in the column after the absolute difference value in the building physical structure deviation analysis report; if the deviation value is too large, select N. If the re-measured data is incorrect, secondary data collection is required, and the accurate data collected again will replace the erroneous re-measured data in the building physical structure deviation analysis report.

[0026] The confirmed problem list is imported back into the analysis platform. The digital building model will be automatically associated and modified according to the problem list to complete the deviation verification of the building's physical structure, so that the digital building model is consistent with the data of the building's physical structure. Finally, the digital building model will be delivered.

[0027] The method for automatic re-measurement of construction deviations of building structures and model acceptance provided by the present invention has the following beneficial effects: it can improve the re-measurement efficiency and quality control of building structures, and the subsequently delivered digital building models are more accurate. In addition, this method is easy to use, the calculation results are all automatically calculated by a computer, the accuracy is high, and it is widely applicable. It greatly improves the accuracy and breadth of the re-measurement of building physical structures, and therefore has broad social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram for modeling building structural beams.

[0029] Figure 2 This is a difference analysis diagram of building structure beams.

[0030] Figure 3 Schematic diagram of the modified digital building model.

[0031] Figure 4 This is a flow chart of the method for automatically re-measuring building structure construction deviations and model acceptance provided by the present invention. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 4 As shown, the method for automatically re-measuring construction deviations of building structures and model acceptance provided by the present invention includes the following steps performed in sequence:

[0034] S1. Set the building coordinate base point and convert it into three-point spatial coordinates. Then, establish a digital building model and Beidou positioning base point based on the building coordinate base point and the three-point spatial coordinates to form a unified coordinate system.

[0035] The specific method is:

[0036] The method of setting the building coordinate base point is to first locate the site coordinate base point according to the coordinate system provided by the design drawings, then locate the building coordinate base point, and finally locate the detailed structure coordinate base point, which will be used as the subsequent coordinate reference point. Its accuracy must meet the requirements to ensure that it provides an accurate base point for the digital building model and Beidou positioning.

[0037] Since the building positioning is mostly determined by the axis coordinates and the elevation coordinates, the spatial three-point coordinates are required when establishing the spatial model. Therefore, the building coordinate base points need to be converted into the spatial three-point coordinate (x, y, z) representation to provide data basis for subsequent steps.

[0038] Then, a digital building model is established based on the converted three-point spatial coordinates. The modeling method should be different according to the characteristics of the components. For example, the beams and columns need to be modeled using the linear additional parameter section method. The digital model of the beam is as follows: Figure 1 As shown, this can achieve the change drive of the parameter section of the line type and the accessory separately, with the purpose of providing the precondition for the automatic modification of the digital building model after the deviation of the building entity structure is remeasured;

[0039] Then, the Beidou positioning base point is set according to the building coordinate base point and the three-point coordinates of space, so that the Beidou positioning base point and the building coordinate base point adopt a unified coordinate system, and the Beidou positioning base point is tested for coordinates to ensure its error accuracy. The method is to use the Beidou positioning laser to scan the building coordinate base point position, thereby collecting coordinate points and setting test points. The test points are usually re-measured at 3 or more points. The collected test points are placed at the above points using a manual total station, and the errors between the two are checked to ensure that the error is controlled within ±1cm. The purpose is to make the coordinate system of the digital building model consistent with the coordinate system of the Beidou positioning re-measurement data collection, form a unified coordinate system, and provide key basic data support for subsequent steps.

[0040] S2. Disassemble the digital building model according to the on-site construction progress and upload it to the analysis platform. Then, set the re-measurement path and re-measurement method according to the unified coordinate system, and use the acquisition equipment to collect re-measurement data of the building physical structure along the re-measurement path;

[0041] The specific method is:

[0042] According to the actual construction progress on site and the physical building structure that needs to be re-measured, the digital building model is disassembled. During the disassembly, the physical building structure that needs to be re-measured on site is separated separately according to the category of components. The purpose is to enable a better comparison and analysis between the re-measured physical building structure and the digital building model, so as to more clearly reflect the deviation between the two.

[0043] The disassembled digital building model is then uploaded to the analysis platform; the analysis platform is a software plug-in based on Revt software and secondary developed using the Python language. It has the functions of quickly splitting the digital building model, retaining the spatial coordinates of the digital building model, and supporting the reception of building entity structure re-measurement data. By using the digital building model and the building entity structure re-measurement data in a volume modeling environment for analysis and calculation and obtaining the difference structure, it can export the building entity structure deviation report, visual display, import the problem list, and the digital building model linkage modification function.

[0044] Then, based on the above-mentioned unified coordinate system and the location of the building entity structure that needs to be re-surveyed on site, a reasonable re-survey path and re-survey method are set up under the condition of a certain working surface; the re-survey path includes fixed-position acquisition and mobile path acquisition; among them, fixed-position acquisition refers to the selection of fixed points that can meet the needs of collecting building entity structure data based on the characteristics of the building entity structure that needs to be re-surveyed and the performance of the acquisition equipment, and setting them on the acquisition equipment, and using Beidou positioning to directly display the points on site for fixed point placement, and then using the acquisition equipment to collect data, which is usually suitable for building structures with smaller areas or closed factories; fixed-position acquisition should also serve as a supplementary point for mobile path acquisition. For building entity structures with complex structures or too large an area, secondary data collection of complex area positions should be carried out after mobile path acquisition to ensure the accuracy and precision of the collected data; mobile path acquisition is suitable for building entity structures with large areas and relatively conventional structures, and data collection can be carried out by manually using backpack-type laser scanning equipment to patrol or inspect the site along the re-survey path.

[0045] S3. Uploading the remeasured data of the building physical structure to the analysis platform and performing real-time deviation analysis on the data of the digital building model using coordinate points to obtain the deviation value of the two;

[0046] The uploading method includes two methods: using a built-in 5G panel or connecting to an internal network for uploading; the coordinate point method uses a unified spatial three-point coordinate (x, y, z) to represent it; the deviation analysis includes coordinate point plane deviation analysis and elevation deviation analysis, and the method is to use the spatial gap between the points and surfaces formed by the re-measured data of the building entity structure and the digital building model to calculate the difference between the two as the deviation value, and the deviation value includes the detailed size, elevation, plane position and structural line type of the building entity structure. Figure 2 This is a difference analysis diagram of building structure beams.

[0047] S4. Classify and summarize the deviation values ​​of the above two items in combination with construction specifications and acceptance standards to form a building entity structure deviation analysis report;

[0048] In S4, the method of classifying and summarizing the deviation values ​​of the above two items in combination with the construction specifications and the acceptance standards to form a building entity structure deviation analysis report is:

[0049] The maximum deviation value of the relevant construction specifications and acceptance standards of each building entity structure is entered, and then the deviation value and deviation location are formed into a building entity structure deviation analysis report according to the construction specifications and acceptance standards, and classified and summarized; the report includes the location name and size of the building entity structure, deviation coordinates and absolute difference; if the difference between the data of the building entity structure at a certain location and the data of the digital building model is less than the maximum deviation value, the maximum deviation value in the present invention is 0.5 cm, and the location name of the digital building model is used to name the data of the building entity structure; if the difference between the data of the building entity structure and the data of the digital building model is greater than the maximum deviation value, the location name can be manually set; the coordinates involved above are all absolute coordinates obtained through a unified coordinate system, and the absolute difference is usually expressed as plane position offset and elevation offset, both of which are obtained by comparing absolute coordinates; Table 1 is an example of an underground structure deviation analysis report, where P is the plane absolute difference and G is the elevation difference.

[0050] Table 1. Underground structure deviation analysis report

[0051]

[0052] S5. Based on the above-mentioned building physical structure deviation analysis report, a problem list is formed. After the problem list is confirmed, it is associated and modified with the digital building model to complete the deviation verification of the building physical structure, and finally the digital building model is delivered.

[0053] The specific method is:

[0054] According to the project management process, the construction party conducts self-verification of the above-mentioned building physical structure deviation analysis report, the supervisor reviews it, and the owner confirms the re-measured building physical structure data to form a problem list; there are two ways to confirm: one is that the deviation value is allowed to exist and does not affect the use of the building physical structure; the other is that if the deviation value is too large, corrective measures should be taken immediately; if the deviation value is allowed to exist, select Y in the column after the absolute difference value in the building physical structure deviation analysis report; if the deviation value is too large, select N; if the re-measured data is incorrect, secondary data collection is required, and the accurate data collected secondary is used to replace the erroneous re-measured data in the building physical structure deviation analysis report; Table 2 is an example of a problem list after the confirmation of an underground structure deviation analysis report.

[0055] Table 2. List of issues after confirmation of underground structure deviation analysis report

[0056]

[0057] The confirmed problem list is imported back into the analysis platform. The digital building model will be automatically associated and modified according to the problem list to complete the deviation verification of the building's physical structure, so that the digital building model is consistent with the data of the building's physical structure. Finally, the digital building model will be delivered. Figure 3 Schematic diagram of the modified digital building model.

Claims

1. A method for automatically re-measuring construction deviations and model acceptance of building structures, characterized by: The method comprises the following steps performed in sequence: S1. Set the building coordinate base point and convert it into three-point spatial coordinates. Then, establish a digital building model and Beidou positioning base point based on the building coordinate base point and the three-point spatial coordinates to form a unified coordinate system. S2. Disassemble the digital building model according to the on-site construction progress and upload it to the analysis platform. Then, set the re-measurement path and re-measurement method according to the unified coordinate system, and use the acquisition equipment to collect re-measurement data of the building physical structure along the re-measurement path; S3. Uploading the remeasured data of the building physical structure to the analysis platform and performing real-time deviation analysis on the data of the digital building model using coordinate points to obtain the deviation value of the two; S4. Classify and summarize the deviation values ​​of the above two items in combination with construction specifications and acceptance standards to form a building entity structure deviation analysis report; S5. Based on the above-mentioned building physical structure deviation analysis report, a problem list is formed. After the problem list is confirmed, it is associated and modified with the digital building model to complete the deviation verification of the building physical structure, and finally the digital building model is delivered.

2. The method for automatically re-measuring construction deviations and model acceptance of building structures according to claim 1 is characterized by: In S1, the specific method of setting the building coordinate base point and converting it into three-point spatial coordinates, and then establishing a digital building model and Beidou positioning base point based on the building coordinate base point and the three-point spatial coordinates to form a unified coordinate system is: The method of setting the building coordinate base point is to first locate the site coordinate base point according to the coordinate system provided by the design drawings, then locate the building coordinate base point, and then locate the detailed structure coordinate base point, which will be used as the subsequent coordinate reference point; Since the building positioning is mostly determined by axis coordinates and elevation coordinates, three-point coordinates are required when establishing the spatial model. Therefore, the building coordinate base points need to be converted into three-point coordinates (x, y, z). Then, a digital building model is established based on the converted three-point spatial coordinates; the modeling method should be different according to the different characteristics of the components; Then, the Beidou positioning base point is set according to the building coordinate base point and the three-point coordinates of space, so that the Beidou positioning base point and the building coordinate base point adopt a unified coordinate system, and the Beidou positioning base point is tested for coordinates to ensure its error accuracy. The method is to use the Beidou positioning laser to scan the building coordinate base point position, thereby collecting coordinate points and setting test points. The test points are usually re-measured at 3 or more points. The collected test points are placed at the above points using a manual total station, and the errors between the two are checked to ensure that the error is controlled within ±1cm. The purpose is to make the coordinate system of the digital building model consistent with the coordinate system of the Beidou positioning re-measurement data collection, form a unified coordinate system, and provide key basic data support for subsequent steps.

3. The method for automatically re-measuring construction deviations and model acceptance of building structures according to claim 1, characterized in that: In S2, the specific method of disassembling the digital building model according to the on-site construction progress and uploading it to the analysis platform, then setting the re-measurement path and re-measurement method according to the unified coordinate system, and using the acquisition equipment to collect re-measurement data of the building physical structure along the re-measurement path is as follows: Disassemble the digital building model according to the actual construction progress on site and the physical structure of the building that needs to be re-measured. During the disassembly, separate the physical structure of the building that needs to be re-measured on site into separate components according to their categories. The disassembled digital building model is then uploaded to the analysis platform; the analysis platform is a software plug-in based on Revt software and secondary developed using Python language; Then, based on the above-mentioned unified coordinate system and the location of the building entity structure that needs to be re-measured on site, a reasonable re-measurement path and re-measurement method are set up under the condition of a certain working surface; the re-measurement path includes two types of fixed-position acquisition and mobile path acquisition; among them, fixed-position acquisition refers to the selection of fixed points that can meet the needs of collecting building entity structure data based on the characteristics of the building entity structure that needs to be re-measured and the performance of the acquisition equipment, and setting them on the acquisition equipment, and using Beidou positioning to directly display the points on site for fixed point placement, and then using the acquisition equipment to collect data, which is usually suitable for building structures with smaller areas or closed factories; fixed-position acquisition should also serve as a supplementary point for mobile path acquisition. For building entity structures with complex structures or large areas, secondary data collection of complex area positions should be carried out after mobile path acquisition to ensure the accuracy and precision of the collected data; Mobile path acquisition is suitable for large-area, relatively conventional building structures. Data is collected by manually using backpack-type laser scanning equipment to patrol or inspect the site along the re-measurement path.

4. The method for automatically retesting building structure construction deviations and model acceptance according to claim 1 is characterized by: In S3, the uploading method includes two methods: using the built-in 5G module or connecting to the internal network for uploading; the coordinate point method uses a unified spatial three-point coordinate (x, y, z) to represent it; the deviation analysis includes coordinate point plane deviation analysis and elevation deviation analysis. The method is to use the spatial gap between the points and surfaces formed by the re-measured data of the building entity structure and the digital building model to calculate the difference between the two as the deviation value. The deviation value includes the detailed size, elevation, plane position and structural line type of the building entity structure.

5. The method for automatically re-testing construction deviations and model acceptance of building structures according to claim 1 is characterized by: In S4, the specific method of classifying and summarizing the deviation values ​​of the above two items in combination with the construction specifications and acceptance standards to form a building entity structure deviation analysis report is: Enter the maximum deviation value of the relevant construction specifications and acceptance standards of each building entity structure, and then form a building entity structure deviation analysis report based on the construction specifications and acceptance standards to classify and summarize the deviation values ​​and deviation locations; the report includes the name and size of the building entity structure location, deviation coordinates and absolute difference value; If the difference between the data of the building physical structure of a certain part and the data of the digital building model is less than the maximum deviation value, the data of the building physical structure shall be named using the part name of the digital building model; If the difference between the data of the building's physical structure and the data of the digital building model is greater than the maximum deviation value, the part name can be set manually; the coordinates involved above are all absolute coordinates obtained through a unified coordinate system, and the absolute difference is usually expressed as plane position offset and elevation offset, both of which are obtained by absolute coordinate comparison.

6. The method for automatically re-testing construction deviations and model acceptance of building structures according to claim 1, characterized in that: In S5, a problem list is generated based on the building physical structure deviation analysis report. After the problem list is confirmed, it is associated with and modified in the digital building model to complete the deviation verification of the building physical structure and finally deliver the digital building model. The specific method is: According to the project management process, the construction party will conduct a self-verification of the above-mentioned building physical structure deviation analysis report, and the supervisor will review it. The owner will then confirm the re-measured building physical structure data to form a problem list. There are two ways to confirm: first, the deviation value is allowed to exist and does not affect the use of the building physical structure; second, if the deviation value is too large, corrective measures should be taken immediately. If the deviation value is allowed to exist, select Y in the column after the absolute difference value in the building physical structure deviation analysis report; If the deviation value is too large, select N; If the re-measured data is incorrect, a second data collection is required, and the accurate data collected in the second time should be used to replace the incorrect re-measured data in the building entity structure deviation analysis report; The confirmed problem list is imported back into the analysis platform. The digital building model will be automatically associated and modified according to the problem list to complete the deviation verification of the building's physical structure, so that the digital building model is consistent with the data of the building's physical structure. Finally, the digital building model will be delivered.

Images