Ancient site building repair analysis method and system based on BIM (Building Information Modeling) technology

Abstract

The invention relates to the technical field of three-dimensional modeling, and discloses an ancient site building repair analysis method and system based on a BIM technology. Comprising an information exploration three-dimensional modeling module, an ancient site repair BIM model establishing module, an engineering quantity list checking module, a repair scheme analysis and evaluation module, an ancient site building comprehensive model updating module and a model comparison deviation analysis module. The method comprises the steps of determining field engineering quantity classification statistics, forming an engineering quantity list, analyzing and evaluating an ancient site building repair scheme according to an early-stage BIM model and the total field engineering quantity, updating an ancient site building comprehensive model, comparing a real scene model with the early-stage created BIM model, and calculating whether construction data has deviation or not. Therefore, comprehensive monitoring and management of the ancient site building repairing process can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of three-dimensional modeling, more particularly to a BIM technology-based ancient site building repair analysis method and system. BACKGROUND

[0002] Ancient architectural sites record the productivity level and social structure of a specific historical period through spatial form, material technology, etc., and are an important part of historical and cultural heritage. The value of ancient architectural sites goes beyond the material itself, serving as a carrier of historical memory, a foundation of cultural identity, a source of scientific exploration, a model of artistic creation, a resource for social development, and a driving force for economic sustainability. However, over time, many ancient site buildings have suffered varying degrees of damage due to natural factors and human destruction, which not only threatens the structural safety of ancient site buildings themselves but also affects the inheritance of their historical and cultural value.

[0003] Traditional ancient building repair methods have accumulated valuable experience over time, but as cultural heritage protection concepts and technologies progress, their limitations have gradually emerged. Currently, traditional ancient building repair methods mainly rely on experience and manual operation, which has the limitations of large manual recording and analysis workload, low efficiency, and susceptibility to errors. Additionally, there is a lack of effective communication means for collaboration between different professionals, which can lead to information asymmetry and decision-making errors. The introduction of three-dimensional scanning, BIM technology, and intelligent monitoring systems is lacking, and there is a lack of scientific dynamic management means, making it difficult to achieve real-time monitoring and adjustment during the repair process. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a BIM technology-based ancient site building repair analysis system to solve the problems existing in the background art.

[0005] The present application provides the following technical solution: a BIM technology-based ancient site building repair analysis system, comprising: an information exploration three-dimensional modeling module, an ancient site repair BIM model establishment module, an engineering quantity list checking module, a repair scheme analysis and evaluation module, an ancient site building comprehensive model updating module, and a model comparison deviation analysis module;

[0006] The information exploration three-dimensional modeling module explores and records the geographical information of the ancient site building construction site and establishes a visual three-dimensional model of the ancient site building.

[0007] The ancient site repair BIM model establishment module determines the ancient site repair BIM model and establishes an ancient site component information module library before repair, perfecting the ancient site building comprehensive model before construction.

[0008] The engineering quantity list checking module determines on-site engineering quantity classification statistics and forms an engineering quantity list.

[0009] The repair scheme analysis and evaluation module analyzes and evaluates the ancient site building repair scheme according to the previous BIM model and the total on-site engineering quantity, determines the ancient site repair scheme, and perfects the BIM component information module library.

[0010] The ancient site building comprehensive model updating module updates the ancient site building comprehensive model according to the new BIM component information module library, and forms the ancient site building comprehensive model after repair.

[0011] The model comparison deviation analysis module uses the unmanned aerial vehicle three-dimensional oblique photography technology to re-photograph the construction site in all directions, compares the real scene model with the previously created BIM model, and calculates whether there is deviation in the construction data.

[0012] Preferably, in the information exploration three-dimensional modeling module, total station, three-dimensional laser scanner and unmanned aerial vehicle are used to organize survey and check professional personnel to conduct on-site survey on the damaged condition and detailed structure of the ancient site building, and to obtain original topographic data.

[0013] According to the construction drawings, the length, width and height of the ancient building are measured and recorded by the total station, the internal structure form of the ancient building is scanned by the three-dimensional laser scanner, the length, width and height of the beam plate and support column and the radius of the support column are measured, the external structure of the ancient building is photographed in all directions by using the unmanned aerial vehicle three-dimensional oblique photography technology, the visual three-dimensional model of the ancient site building is established, and the data is stored in the ancient site building BIM information library, and the ancient site building BIM information library includes a BIM component information module library of different components.

[0014] Preferably, in the ancient site repair BIM model establishing module, the specific content is as follows:

[0015] According to the real scene modeling effect, topographic data and component size of the ancient site building, a BIM software is used to create and draw the ancient site structure main model, wherein the ancient site building structure main model selects to establish a general family to create the ancient site component, and the parameter setting of the general family includes the component size, component appearance and material characteristic information of each general family;

[0016] The real scene model and the ancient building structure main model are integrated to establish a BIM model, and the data is stored in the ancient site building BIM information library.

[0017] Preferably, the engineering quantity check module extracts information from the BIM model and the BIM information base, classifies the materials involved in the BIM model, the classification including main components and decorative materials of ancient buildings, calculates the engineering quantity of each material, and generates the engineering quantity list.

[0018] Preferably, the repair scheme analysis and evaluation module analyzes and evaluates the repair scheme of the ancient site building according to the BIM model content and the engineering quantity list, optimizes the repair scheme of the ancient site, and stores the optimized repair scheme data to the BIM information base of the ancient site building.

[0019] Preferably, the ancient site building comprehensive model updating module updates the BIM component information module base of each repair site and component according to the optimized repair scheme of the ancient site, forms the comprehensive model of the ancient site building after repair according to the updated BIM component information module base, and perfects the new repair scheme of the ancient site building, and updates the comprehensive model of the ancient site building in a cycle.

[0020] Preferably, the model comparison and deviation analysis module compares the engineering quantity in the updated comprehensive model of the ancient site building with the actual calculation engineering in the real scene model in the later acceptance process, calculates the deviation data of the building size in the repair engineering, and the calculation formula is F(AB) = F(A) - F(B), wherein F(AB) represents the output deviation data, F(A) represents the input data in the updated comprehensive model of the ancient site building, and F(B) represents the input data in the real scene model in the later acceptance process.

[0021] A repair analysis method for ancient site buildings based on BIM technology, comprising the following steps:

[0022] Step S01: Exploring the geographic information of the construction site of the ancient site building and recording the feature information of the components of the ancient site, and establishing a visual three-dimensional model of the ancient site building;

[0023] Step S02: determining the BIM model of the ancient site repair and establishing the component information module base before the ancient site repair, and perfecting the comprehensive model of the ancient site building before construction;

[0024] Step S03: determining the classification and statistics of the engineering quantity on site, and forming the engineering quantity list;

[0025] Step S04: analyzing and evaluating the repair scheme of the ancient site building according to the BIM model and the total engineering quantity on site, determining the repair scheme of the ancient site, and perfecting the BIM component information module base;

[0026] Step S05: updating the comprehensive model of the ancient site building according to the new BIM component information module base, and forming the comprehensive model of the ancient site building after repair;

[0027] Step S06: Re-photograph the construction site using the unmanned aerial vehicle three-dimensional oblique photography technology, compare the real scene model with the previously created model, and calculate whether there is deviation in the construction data.

[0028] Technical effects and advantages of the present application:

[0029] The present application establishes a visual three-dimensional model of the ancient site building to determine the ancient site repair BIM model, determines the on-site engineering quantity classification statistics, and forms the bill of quantities, analyzes and evaluates the ancient site building repair scheme according to the previous BIM model and the total on-site engineering quantity, and updates the comprehensive model of the ancient site building, compares the real scene model with the previously created BIM model, and calculates whether there is deviation in the construction data, so as to realize the comprehensive monitoring and management of the ancient site building repair process, not only improves the accuracy and efficiency of the ancient site building repair, but also greatly reduces the errors caused by manual recording and analysis, realizes the digital management of the ancient site building repair process by introducing BIM technology and three-dimensional modeling, and makes each link in the repair process be able to be accurately controlled. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an ancient site building repair analysis system based on BIM technology.

[0031] Figure 2 It is a flowchart of an ancient site building repair analysis method based on BIM technology. DETAILED DESCRIPTION

[0032] The technical solutions in the present application will be described clearly and completely in combination with the drawings in the present application, and the forms of each structure described in the following embodiments are only examples, and the ancient site building repair analysis method and system based on BIM technology involved in the present application are not limited to each structure described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0033] As shown in Figure 1 The present application provides an ancient site building repair analysis system based on BIM technology, comprising: an information exploration three-dimensional modeling module, an ancient site repair BIM model establishing module, an engineering quantity list checking module, a repair scheme analysis and evaluation module, an ancient site building comprehensive model updating module, and a model comparison deviation analysis module.

[0034] The information exploration three-dimensional modeling module explores and records the feature information of the ancient site components to establish a visual three-dimensional model of the ancient site building based on the geographic information of the ancient site building construction site;

[0035] The ancient site repair BIM model establishing module determines the ancient site repair BIM model and establishes the component information module library before the ancient site repair to perfect the comprehensive model of the ancient site building before construction;

[0036] The engineering quantity list checking module determines the classification statistics of the site engineering quantity and forms the engineering quantity list;

[0037] The repair scheme analysis and evaluation module analyzes and evaluates the repair scheme of the ancient site building based on the previous BIM model and the calculated site engineering quantity, determines the repair scheme of the ancient site and perfects the BIM component information module library;

[0038] The ancient site building comprehensive model updating module updates the comprehensive model of the ancient site building based on the new BIM component information module library to form the comprehensive model of the ancient site building after repair;

[0039] The model comparison deviation analysis module uses the unmanned aerial vehicle three-dimensional oblique photography technology to re-photograph the construction site in all directions, compares the real scene model with the previously created BIM model, and calculates whether there is deviation in the construction data.

[0040] In this embodiment, it needs to be specifically pointed out that in the information exploration three-dimensional modeling module, first, the land area of the ancient site building is determined through on-site exploration, and the buildings that need to be repaired are partitioned according to the form of the ancient site building;

[0041] Before three-dimensional oblique photography, a detailed photography plan is made according to the divided areas on site, including shooting area, shooting angle, flight height and other information, which will affect the quality and accuracy of the three-dimensional model finally generated. The oblique angle image of the target area is shot by the unmanned aerial vehicle, and the coverage and overlap of the image are crucial to the subsequent three-dimensional model generation. A shooting method with high overlap is adopted, the collected oblique angle image data is transmitted to the computer for subsequent processing, including image correction, registration, three-dimensional point cloud generation and other steps, and finally a complete real scene model is formed;

[0042] The three-dimensional laser scanner is placed inside the ancient site building that needs internal repair, and the device can scan all corners of the building in all directions. The device is started to scan the building, and the device emits a laser beam and records the data reflected back to generate a three-dimensional model of the building. After scanning is completed, the collected data is transmitted to a computer for subsequent processing, including data cleaning, registration, point cloud generation, etc. Finally, a complete three-dimensional model is generated.

[0043] The generated three-dimensional model is evaluated and verified to ensure that the model is consistent with the shape and structure of the actual building, and necessary corrections and adjustments are made. Finally, the precise dimensions of each ancient site building are determined using a total station instrument.

[0044] In this embodiment, it needs to be specifically pointed out that in the ancient site repair BIM model establishment module, according to the real scene model and data size obtained by the previous work, the coordinate system and unit of the model are first determined in the BIM software to ensure consistency with the collected information. Then, according to the collected component information, create walls, floors, beams, columns and other components in the BIM software, set appropriate parameters and attributes for each component element, including size, material, color, structure, connection method, etc., to ensure the authenticity and accuracy of the model. Next, use the components to perform BIM modeling and associate the information of each part: associate the components according to the actual situation of the ancient site building, establish the association relationship between the components, such as the connection between the wall and the floor, the relationship between the beam and the column, etc. This is done to enable faster replacement of new components when updating component information in the future. Finally, adjust and optimize the geometric shape of the components according to the actual situation to ensure that the model is consistent with the actual situation, and deepen the detailed information of important components, such as the opening method of doors and windows, the connection method of pipes, the support method of structural members, etc. Add decorations, signs, etc. of the components as needed. After completing the modeling of the model, the model is exported to share with other members of the project team for review, analysis and use.

[0045] In this embodiment, it needs to be specifically pointed out that in the engineering quantity list checking module, each component in the BIM model has a series of parameters and attributes, such as length, width, height, material, quantity, etc. Therefore, the BIM software can automatically identify and classify the components according to their parameters and attributes, and automatically calculate the quantity of the components.

[0046] For wall components, the area and quantity of the wall are calculated according to the length and height, and for beam and column components, the volume and quantity of the beam and column are calculated according to the length and cross-sectional area. Meanwhile, the BIM software can automatically match the corresponding measurement units and calculation rules according to the material properties and parameter settings of the components. For components of a concrete structure, the volume and weight of the components can be calculated according to the material density and cross-sectional area. The BIM software automatically generates the bill of quantities, which includes the quantity, area, volume, length and other information of various components, as well as the related measurement units and remarks, by comprehensively considering the above calculation and matching results. Since the BIM model is dynamic, the bill of quantities can be automatically updated in real time according to design changes or adjustments, so that the real-time and accuracy of the quantity data can be maintained.

[0047] In this embodiment, it needs to be specifically pointed out that in the repair scheme analysis and evaluation module, the information of the structure, material, geometric shape and the like of the ancient site building in the BIM model established in the early stage is analyzed, and the required materials, working hours, cost and the like for repair are understood in combination with the actual engineering quantity data on site;

[0048] Next, professional repair personnel formulate different repair schemes for the ancient site according to the analyzed model content and engineering quantity data, and these schemes include repair of the foundation, reinforcement of the structure, decoration and finishing and the like, and then the construction management personnel evaluate the economy and implementability of each scheme, comprehensively consider the cost, benefit, feasibility and the like of each repair scheme, compare, and also consider the stability, protection effect, historical value, tourist experience and the like of the building after repair, so as to ensure that the repair scheme meets the requirements of economic benefit and implementability, and the problems found are fed back to the professional repair personnel, and after evaluation and comparison, the construction management personnel determine the ancient site repair scheme that meets the requirements most.

[0049] In this embodiment, it needs to be specifically pointed out that in the ancient site building comprehensive model updating module, the BIM professional personnel perfect the related information in the BIM component information module library according to the determined repair scheme: including updating the information of the parameters, properties, materials and the like of the components after repair, and adjusting the positions and association relationships of the components in the model, so as to ensure that the model is consistent with the actual repair scheme;

[0050] The repair scheme and the updated BIM comprehensive model are handed over to the on-site construction personnel, including the construction plan, technical requirements, safety measures and the like, and the on-site construction management personnel repair each component with different damage degrees according to the repair scheme and the BIM model. They understand the repair requirements and demands of each component according to the information in the BIM model, and organize the construction personnel to perform the corresponding repair work;

[0051] During the repair process, if new problems arise due to construction plans, technology, etc., the site construction management personnel will promptly record the problems and use the BIM model and actual site photos to explain and describe the nature and impact of the problems. These problem feedbacks will be promptly fed back to the professional repair personnel, who will adjust and update the BIM model according to the feedback problems, solve new problems that arise during construction, and adjust the repair plan and process;

[0052] The updated BIM model will be synchronized to each ancient site repair work area, ensuring that construction personnel in each construction area can promptly understand the latest version of the repair plan and repair requirements, which can avoid the occurrence of similar problems and ensure the smooth progress and quality of the repair work. During the entire repair process, construction management personnel will continuously supervise and update the BIM model to ensure that the repair work is carried out according to the latest repair plan, promptly handle problems and adjust repair strategies, and ensure the quality and progress of the repair project.

[0053] In this embodiment, it needs to be specifically pointed out that in the model comparison deviation analysis module, after completing an important stage or a certain amount of work, organize various professional personnel to participate in acceptance, including building, structure, equipment, decoration and other related professions, arrange unmanned aerial vehicles to carry out full three-dimensional oblique photography, covering all areas of the construction site, and ensure that enough detailed information is captured. The obtained photographic data includes aerial images, point cloud data and three-dimensional models;

[0054] Process the photographic data obtained by the unmanned aerial vehicle to generate a real scene model of the construction site, compare the generated construction site model with the BIM model created in the early stage, compare the differences between the actual situation of the construction site and the design model, use BIM software tools to compare and analyze the deviations between the actual construction data and the design model, including position deviation, size difference, shape change, etc. Calculate the deviation amount and determine the specific problems and areas that need to be corrected;

[0055] According to the deviation calculation result, formulate the corresponding correction work scheme, which involves adjusting the construction plan, correcting the construction method, re-measuring and other measures; implement the correction work and ensure that the corrected construction data meets the design requirements and standards; after completing the overall repair work, organize various professional personnel to carry out fine acceptance, the acceptance content includes engineering quality, construction specification, safety measures and other aspects, to ensure that each project meets the standard requirements, and the fine acceptance results are arranged into a report or list to form the acceptance conclusion.

[0056] As shown in Figure 2 In this embodiment, it needs to be specifically pointed out that a BIM technology-based ancient site building repair analysis method includes the following steps:

[0057] Step S01: explore and record the geographical information of the ancient site construction site and the feature information of the ancient site components, and establish a visual three-dimensional model of the ancient site building;

[0058] Step S02: determine the ancient site repair BIM model and establish the component information module library before the ancient site repair, and perfect the proposed comprehensive model of the ancient site building before construction;

[0059] Step S03: determine the on-site engineering quantity classification statistics, and form the bill of quantities;

[0060] Step S04: according to the previous BIM model and the calculated on-site engineering quantity, analyze and evaluate the ancient site building repair scheme, determine the ancient site repair scheme and perfect the BIM component information module library;

[0061] Step S05: according to the new BIM component information module library, update the comprehensive model of the ancient site building, and form the comprehensive model of the ancient site building after repair;

[0062] Step S06: use the unmanned aerial vehicle three-dimensional oblique photography technology to re-photograph the construction site in all directions, compare the real scene model with the previously created model, and calculate whether there is deviation in the construction data.

[0063] In the embodiment, it needs to be specifically pointed out that the difference between the embodiment and the prior art is mainly that the embodiment is provided with an information exploration three-dimensional modeling module, an ancient site repair BIM model establishing module, an engineering quantity list checking module, a repair scheme analysis and evaluation module, an ancient site building comprehensive model updating module and a model comparison deviation analysis module. The visual three-dimensional model of the ancient site building is established to determine the ancient site repair BIM model, the on-site engineering quantity classification statistics are determined, and the bill of quantities is formed. According to the previous BIM model and the calculated on-site engineering quantity, the ancient site building repair scheme is analyzed and evaluated, and the comprehensive model of the ancient site building is updated. The real scene model is compared with the previously created BIM model, and whether there is deviation in the construction data is calculated, so as to realize the comprehensive monitoring and management of the ancient site building repair process. Not only the accuracy and efficiency of the ancient site building repair are improved, but also the errors caused by manual recording and analysis are greatly reduced. Through the introduction of BIM technology and three-dimensional modeling, the digital management of the ancient site building repair process is realized, and each link in the repair process can be accurately controlled.

[0064] Finally: the above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0065] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An ancient ruins building repair analysis system based on BIM technology, characterized by: include: Information exploration 3D modeling module, ancient site restoration BIM model establishment module, bill of quantities verification module, repair plan analysis and evaluation module, ancient site building comprehensive model update module, and model comparison deviation analysis module; The information exploration and three-dimensional modeling module explores the geographical information of the ancient ruins construction site and records the characteristic information of the ancient ruins components to establish a visual three-dimensional model of the ancient ruins buildings; The ancient ruins restoration BIM model establishment module determines the ancient ruins restoration BIM model and establishes the ancient ruins restoration component information module library before the restoration, and improves the proposed comprehensive model of the ancient ruins building before construction; The bill of quantities verification module determines the classification statistics of on-site engineering quantities and forms a bill of quantities; The repair plan analysis and evaluation module analyzes and evaluates the repair plan of the ancient ruins buildings based on the previous BIM model and the total on-site engineering volume, determines the repair plan of the ancient ruins and improves the BIM component information module library; The ancient ruins building comprehensive model updating module updates the ancient ruins building comprehensive model according to the new BIM component information module library to form a repaired ancient ruins building comprehensive model; The model comparison deviation analysis module uses drone 3D oblique photography technology to re-photograph the construction site in all directions, compares the real-scene model with the BIM model created in the early stage, and calculates whether there is any deviation in the construction data.

2. The ancient ruins building repair analysis system based on BIM technology according to claim 1 is characterized by: In the information exploration 3D modeling module, a total station, 3D laser scanner and drone are used to organize survey and verification professionals to conduct on-site surveys of the damage status of the ancient ruins buildings and their detailed structures to obtain original terrain data; According to the construction drawings, the length, width and height of the ancient building were measured and recorded using a total station, and the internal structural form of the ancient building was scanned using a 3D laser scanner. At the same time, the length, width and height of the beams and pillars, as well as the radius of the pillars, were measured. The external structure of the ancient building was photographed in all directions using drone 3D oblique photography technology, and a visual 3D model of the ancient ruins building was established. The data was stored in the BIM information library of the ancient ruins building, which includes a BIM component information module library of different components.

3. The ancient ruins building repair analysis system based on BIM technology according to claim 1 is characterized by: The specific contents of the ancient ruins restoration BIM model establishment module are as follows: Based on the real-life modeling effects, terrain data, and component sizes of the ancient ruins buildings, BIM software was used to create a main structural model of the ancient ruins. A general family was established for the main structural model of the ancient ruins buildings to create components of the ancient ruins. The parameter settings of the general family included the component sizes, component appearances, and material characteristics of each general family. Integrate the real-scene model with the main model of the ancient building structure to establish a BIM model, and store the data in the BIM information database of the ancient ruins building.

4. The ancient ruins building repair analysis system based on BIM technology according to claim 1 is characterized by: In the bill of quantities verification module, information is extracted from the BIM model and the BIM information library, and the materials involved in the BIM model are classified into: main components of ancient buildings and decorative materials, the engineering quantity of each material is calculated, and the bill of quantities is generated.

5. The ancient ruins building repair analysis system based on BIM technology according to claim 1 is characterized by: In the repair plan analysis and evaluation module, the repair plan of the ancient ruins building is analyzed and evaluated based on the previous BIM model content and the bill of quantities, the repair plan of the ancient ruins building is optimized, and the optimized repair plan data is stored in the BIM information database of the ancient ruins building.

6. The ancient ruins building repair analysis system based on BIM technology according to claim 1 is characterized by: In the ancient ruins building comprehensive model update module, the BIM component information module library is updated for each repair part and component according to the optimized ancient ruins repair plan, and a comprehensive model of the ancient ruins building after repair is formed according to the updated BIM component information module library, and the new ancient ruins building repair plan is improved, and the comprehensive model of the ancient ruins building is updated in a cycle.

7. The ancient ruins building repair analysis system based on BIM technology according to claim 1 is characterized by: The model comparison deviation analysis module compares the engineering quantities in the updated comprehensive model of the ancient ruins buildings with the actual calculated engineering quantities in the real-scene model in the later acceptance process during the acceptance process, and calculates the deviation data of the building dimensions in the repair project. The calculation formula is: F(AB)=F(A)-F(B), where F(AB) represents the deviation data output by the calculation, F(A) represents the data input in the updated comprehensive model of the ancient ruins buildings, and F(B) represents the data input in the real-scene model in the later acceptance process.

8. A BIM-based ancient ruins building repair analysis method, used to use the BIM-based ancient ruins building repair analysis system according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S01: Exploring the geographical information of the ancient ruins construction site and recording the characteristic information of the ancient ruins components to establish a visual 3D model of the ancient ruins buildings; Step S02: Determine the BIM model for the restoration of the ancient ruins and establish an information module library of components before the restoration of the ancient ruins, and improve the comprehensive model of the ancient ruins buildings before construction; Step S03: Determine the classification statistics of on-site engineering quantities and form a bill of quantities; Step S04: Analyze and evaluate the ancient ruins building repair plan based on the previous BIM model and the total on-site engineering quantity, determine the ancient ruins repair plan and improve the BIM component information module library; Step S05: updating the comprehensive model of the ancient ruins buildings according to the new BIM component information module library to form a comprehensive model of the ancient ruins buildings after repair; Step S06: Use the drone's 3D oblique photography technology to re-photograph the construction site in all directions, compare the real-scene model with the model created earlier, and calculate whether there is any deviation in the construction data.

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