BIM and GIS integrated fabricated building construction management method and system

Abstract

The invention provides a BIM (Building Information Modeling) and GIS (Geographic Information System) integrated fabricated building construction management method and system, and relates to the technical field of constructional engineering information. A four-dimensional BIM model is determined by returning BIM data and performing four-dimensional simulation; gIS data is returned, aerial triangulation encryption calculation is carried out to generate point cloud data, and terrain scene point cloud is determined; importing, integrating and fitting a terrain scene point cloud and the four-dimensional BIM model, determining an optimized BIM model, and constructing a construction management module in combination with a network structure of a multifunctional layer; building functional simulation and building collision optimization are carried out on the basis of a building management module in combination with the optimized BIM model, and a building management strategy is determined; and in combination with a mobile management port, terminal visualization and construction supervision are carried out on a construction management strategy. The technical problem that the construction management accuracy and the response capability are limited due to the fact that an existing BIM technology lacks geographic space data is solved, and the overall efficiency and accuracy of prefabricated building construction management are remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of construction engineering information technology, and specifically to a prefabricated building construction management method and system integrating BIM and GIS. Background Art

[0002] In the construction management of prefabricated buildings, BIM (Building Information Modeling) technology has gradually been widely used with its advantages of three-dimensional modeling and information integration. BIM technology provides detailed building component information and life cycle management by creating and managing digital representations of construction projects. However, existing BIM technology mainly focuses on the internal details of buildings and the management of three-dimensional models, and has certain limitations in dealing with the relationship between buildings and the surrounding geographical environment. This may lead to a mismatch between the building design and the actual geographical environment, affecting the functionality and sustainability of the building. Secondly, the existing BIM technology lacks support for the time dimension and geographical environment information, which limits the visualization and supervision capabilities of the construction process. It is difficult for the project team to access the latest design models and construction progress in real time, resulting in delays in problem identification and resolution, affecting overall construction efficiency.

[0003] GIS (Geographic Information System) can provide macroscopic geographic environment data, including topography, landforms, and infrastructure. GIS technology focuses on the processing and analysis of geospatial data, but pays less attention to the details of the building itself. Existing management methods usually treat BIM and GIS separately. This separate management method leads to data silos, making it difficult to share and integrate BIM and GIS data, and increasing the complexity of data conversion and processing. Summary of the invention

[0004] This application provides a prefabricated building construction management method and system that integrates BIM and GIS, which solves the technical problem that the existing BIM technology lacks geographic spatial data, resulting in inaccurate management of the prefabricated building construction process, limited management efficiency and responsiveness, thereby affecting the construction efficiency and quality of prefabricated buildings, and achieves the technical effect of significantly improving the overall efficiency and accuracy of prefabricated building construction management.

[0005] In view of the above problems, on the one hand, the present application provides a method for construction management of prefabricated buildings integrated with BIM and GIS, the method comprising: transmitting BIM data back and performing four-dimensional simulation to determine a four-dimensional BIM model, wherein the model dimension includes the three-dimensional dimension of the building and the project advancement dimension; transmitting GIS data back and performing aerial triangulation calculation to generate point cloud data to determine a terrain scene point cloud; importing, integrating and fitting the terrain scene point cloud and the four-dimensional BIM model to determine an optimized BIM model, and combining the network structure of the multi-functional layer to construct a construction management module; based on the construction management module and in combination with the optimized BIM model, performing building functional simulation and construction collision optimization to determine a construction management strategy, wherein the construction management strategy is identified with a modular strategy; and in combination with a mobile management port, performing terminal visualization and construction supervision on the construction management strategy.

[0006] On the other hand, the present application also provides an assembled building construction management system integrated with BIM and GIS, the system comprising: a four-dimensional BIM model generation unit, the four-dimensional BIM model generation unit is used to transmit BIM data and perform four-dimensional simulation to determine a four-dimensional BIM model, wherein the model dimension includes three-dimensional building and project advancement dimensions; a terrain scene point cloud generation unit, the terrain scene point cloud generation unit is used to transmit GIS data and perform air triangulation calculation to generate point cloud data, and determine a terrain scene point cloud; a construction management module construction unit, the construction management module construction unit is used to import, integrate and fit the terrain scene point cloud and the four-dimensional BIM model, determine an optimized BIM model, and construct a construction management module in combination with a network structure of a multi-functional layer; a management strategy generation unit, the management strategy generation unit is used to perform building functional simulation and construction collision optimization based on the construction management module and in combination with the optimized BIM model, and determine a construction management strategy, wherein the construction management strategy is identified with a modular strategy; a construction supervision unit, the construction supervision unit is used to perform terminal visualization and construction supervision on the construction management strategy in combination with a mobile management port.

[0007] One or more technical solutions provided in this application have at least the following technical effects or advantages: The BIM data is transmitted back and a four-dimensional simulation is performed to determine the four-dimensional BIM model, in which the model dimensions include the three-dimensional dimensions of the building and the project advancement dimensions, which intuitively displays the status of the building at different time nodes, and is helpful for the full management and monitoring of the project. The GIS data is transmitted back and the point cloud data is generated by air triangulation calculation, and the terrain scene point cloud is determined to accurately reflect the details and characteristics of the terrain, so that the design and construction of the construction project can fully consider the impact of the surrounding environment. The terrain scene point cloud and the four-dimensional BIM model are imported, integrated and fitted to determine the optimized BIM model, realizing the seamless integration of the building model and the geographic spatial data, making the model more in line with the actual environment. Combined with the network structure of the multi-functional layer, a construction management module is constructed, which can simulate the functional construction and collision detection and optimization during the construction process, discover and solve potential problems in the design and construction in advance, and ensure that all parts of the building design and construction process can be smoothly connected. Based on the construction management module, combined with the optimized BIM model, the building functional simulation and construction collision optimization are carried out to determine the construction management strategy, wherein the construction management strategy is marked with a modular strategy, which can effectively manage the various modular components of the building, ensure the coordination and efficient execution of various construction stages and modular components, and improve the systematicness and integrity of project management. Combined with the mobile management port, the construction management strategy is terminally visualized and supervised, so that managers can understand the project progress and on-site conditions anytime and anywhere, and make timely adjustments and decisions.

[0008] To summarize, this application integrates BIM and GIS data, uses four-dimensional simulation and point cloud data fitting to achieve seamless data sharing and integration, enhances the real-time monitoring and dynamic management capabilities of the project, and ensures the consistency and integrity of the data; and combines the optimized BIM model and construction management module to perform building functional simulation and construction collision optimization, determine the construction management strategy, and optimize the building model and construction management process, thereby improving the efficiency and accuracy of prefabricated building construction management, and significantly improving the full life cycle management capabilities and construction quality of construction projects.

[0009] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A flowchart of a method for prefabricated building construction management integrating BIM and GIS provided in an embodiment of the present application; Figure 2 A schematic diagram of a process for determining encrypted point cloud data in a method for prefabricated building construction management integrating BIM and GIS provided in an embodiment of the present application; Figure 3 A schematic diagram of a process for simulating building functionality in a method for prefabricated building construction management integrating BIM and GIS provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of a prefabricated building construction management system integrating BIM and GIS provided in an embodiment of the present application.

[0011] Explanation of the accompanying drawings: four-dimensional BIM model generating unit 10, terrain scene point cloud generating unit 20, construction management module constructing unit 30, management strategy generating unit 40, construction supervision unit 50. DETAILED DESCRIPTION

[0012] The embodiments of the present application provide a method and system for prefabricated building construction management that integrates BIM and GIS, thereby solving the technical problem that the existing BIM technology lacks geographic spatial data, resulting in inaccurate management of the prefabricated building construction process, limited management efficiency and responsiveness, and thus affecting the construction efficiency and quality of prefabricated buildings, thereby achieving the technical effect of significantly improving the overall efficiency and accuracy of prefabricated building construction management.

[0013] Embodiment 1, as Figure 1 As shown, the embodiment of the present application provides a method for managing the construction of prefabricated buildings integrating BIM and GIS, the method comprising: Step S1: Return BIM data and perform four-dimensional simulation to determine the four-dimensional BIM model, where the model dimensions include the three-dimensional building and the project advancement dimensions.

[0014] Specifically, BIM is a 3D-model-based building design and management technology that creates detailed information models of buildings through digital means, including the geometric, physical and functional characteristics of building components. The four-dimensional BIM model is a model that combines the BIM model with the project's construction schedule. It not only contains the 3D structure of the building, but also the time dimension information of the construction.

[0015] BIM data of the construction project is transmitted back through BIM technology. This data usually includes the three-dimensional geometric information, material properties, structural information and related construction information of the building. BIM data can be created and managed through professional BIM software such as Autodesk Revit, BentleySystems, Graphisoft ArchiCAD, etc. Then, these BIM data are imported into a software tool capable of four-dimensional simulation, such as Autodesk Navisworks or Synchro Pro. These tools can combine the three-dimensional model with the project schedule to generate a four-dimensional BIM model. The project schedule is usually created and managed through project management software such as Microsoft Project or Primavera P6. During the four-dimensional simulation process, the software tool will integrate the three-dimensional model of the building with the time progress data to dynamically display the construction process of the construction project in a virtual environment. For example, at the beginning of construction, the software will display the three-dimensional model of the foundation construction, and as time goes on, it will gradually display the various construction stages such as foundation completion, structural frame construction, wall construction, and interior decoration.

[0016] Step S1 creates a complete four-dimensional BIM model, which not only presents the three-dimensional form of the building, but also integrates the time schedule of the project, provides an intuitive visualization method, helps project managers coordinate and monitor the construction progress, and improves the efficiency and accuracy of project management.

[0017] Step S2: Return GIS data and perform aerial triangulation calculation to generate point cloud data and determine the terrain scene point cloud.

[0018] Specifically, GIS (Geographic Information System) is a system for capturing, storing, analyzing and managing geospatial data, and is widely used in fields such as geospatial analysis and environmental monitoring. Point cloud data is a data set consisting of a large number of three-dimensional coordinate points, which is used to represent the three-dimensional shape and position of the surface of an object. Terrain scene point cloud is generated by aerial triangulation calculation, which is point cloud data that describes the terrain features in detail.

[0019] First, obtain the GIS data of the project site. This data usually includes information such as terrain, landforms, roads, and water bodies, and is usually obtained through remote sensing satellites, drone aerial photography, or lidar scanning. Common GIS software includes EsriArcGIS, QGIS, etc. Next, use aerial triangulation technology to process these GIS data into point cloud data. Aerial triangulation is a high-precision image matching technology that generates three-dimensional point cloud data by finely matching and calculating aerial images. This process can be completed using professional image processing and 3D reconstruction software such as Pix4D, Agisoft Metashape, or Bentley ContextCapture. When performing aerial triangulation, the software will perform geometric correction and matching on multiple aerial images to generate three-dimensional coordinates for each image pixel. Points representing the terrain are selected from the generated point cloud to form a terrain scene point cloud. The final output point cloud data will contain detailed three-dimensional information of the terrain surface, including height, slope, and various terrain features.

[0020] Step S2 generates an accurate terrain scene point cloud through the above process, providing reliable geospatial data support for subsequent building design and construction planning.

[0021] Step S3: import, integrate and fit the terrain scene point cloud and the four-dimensional BIM model, determine the optimized BIM model, and build a construction management module in combination with the network structure of the multi-functional layer.

[0022] Specifically, the optimized BIM model is a BIM model that combines terrain information to more accurately reflect the interaction between the building and the surrounding environment. The network structure of the multifunctional layer is a multi-level, multifunctional structure used to process and manage complex building and geographic data, and achieve seamless integration and interaction of different data layers. These functional layers help simulate and analyze different aspects of the building to ensure the integrity and feasibility of the design. The construction management module is a module built based on the optimized BIM model and the multifunctional layer network structure, which is used for the full life cycle management of the project, including planning, design, construction and maintenance stages.

[0023] First, the previously generated four-dimensional BIM model and the terrain scene point cloud data obtained by aerial triangulation are imported into an integrated environment. This environment may be a professional BIM software or a specially designed data processing platform. At this stage, the terrain scene point cloud data and the four-dimensional BIM model are fitted and integrated. The fitting process includes adjusting the coordinate system and scale of the point cloud data and the BIM model so that they are accurately aligned in the same spatial reference system, ensuring the spatial consistency of the building model and the terrain data, and reflecting the real geographical environment and building structure. After the fitting is completed, the integrated data is processed and managed using the multi-functional layer network structure to obtain an optimized BIM model. The multi-functional layer network structure includes multiple data layers, each of which is responsible for different types of data processing and management tasks, such as monitoring and acquisition layer, transmission and storage layer, data sorting layer, and data processing layer. Through this structure, seamless integration and multi-level management of data can be achieved, and the utilization efficiency and accuracy of data can be improved.

[0024] Combining the optimized BIM model with the multifunctional layer network structure, a construction management module is built. This module can simulate the building functionality and detect and optimize collisions during the construction process, and support the full life cycle management of the project. Commonly used tools in this process include Navisworks Manage, Bentley ProjectWise, and Trimble Connect.

[0025] Through step S3, a more comprehensive optimized BIM model can be obtained, including detailed information about the building itself and the surrounding environment, providing comprehensive data support for the planning, design, construction and maintenance of the project. A construction management module is also built for subsequent building functional simulation and construction collision optimization, which improves the efficiency and quality of project management and ensures the smooth implementation of each stage.

[0026] Step S4: Based on the construction management module and in combination with the optimized BIM model, building functionality simulation and construction collision optimization are performed to determine a construction management strategy, wherein the construction management strategy is identified by a modular strategy.

[0027] Specifically, the construction management strategy is a detailed construction management plan based on simulation and optimization results, including tasks, resource allocation and time schedule for each construction stage. The modular strategy is a strategy to decompose the construction project into multiple independent modules, each of which can be independently designed, manufactured and installed to improve construction efficiency and flexibility.

[0028] First, based on the previously constructed construction management module and optimized BIM model, the functional simulation of the building is carried out, that is, the simulation function of the BIM software is used to simulate the various functions of the building in a virtual environment, such as structural strength analysis, energy efficiency evaluation, and flow line planning, so as to test the performance of the building design in actual use. Then, the collision detection function of the BIM software is used to simulate each link in the construction process, identify and solve the collision and conflict problems between various components, and optimize the construction plan. Based on the results of functional simulation and collision optimization, a detailed construction management strategy is formulated. This strategy includes task scheduling, resource allocation, and time planning for each construction stage to ensure the smooth progress of the construction process. When formulating the construction management strategy, a modular strategy is applied, that is, the construction project is decomposed into multiple independent modules, each of which can be independently designed, manufactured, and installed. This not only improves the construction efficiency, but also increases the flexibility of the construction process. For example, a high-rise building project can divide the foundation, structural frame, facade, and interior decoration into multiple modules, which are designed and constructed separately and finally assembled on site.

[0029] Step S4 discovers and solves potential problems in design and construction in advance through functional simulation and collision detection, ensures the functionality of the building and the smooth progress of the construction process, optimizes the construction plan, reduces conflicts and rework in construction, and improves the overall construction efficiency and quality.

[0030] Step S5: Combined with the mobile management port, terminal visualization and construction supervision are performed on the construction management strategy.

[0031] Specifically, the mobile management port refers to a software interface designed for mobile devices, which allows users to access and operate the backend management system through mobile devices such as smartphones and tablets. This port provides convenient remote management functions, allowing project managers to monitor and control the construction site at any time and any place.

[0032] Use the mobile management port for terminal visualization to push the information and data in the construction management module to the mobile device in real time. This data usually includes project progress, resource allocation, construction tasks and real-time information on the site. The mobile management port can present the real-time data and four-dimensional BIM model of the construction project through a dedicated application or software on the mobile device. Project managers can view the construction progress, task status, resource usage and site conditions through mobile phones or tablets. For example, using Autodesk BIM 360, managers can view various parts of the BIM model in real time to check the construction progress and task completion. Then, the construction process is supervised in real time through the mobile management port. Combined with the mobile management port, project managers can receive data collected by on-site sensors, cameras and other equipment in real time, conduct real-time monitoring and analysis of the construction site, and manage project progress. Through the above process, managers can obtain the latest information on the site at any time, discover and deal with problems in a timely manner, and ensure that the construction proceeds as planned. For example, using the Procore Mobile App, on-site managers can take photos and videos of the construction site, upload them to the project management platform, and share the on-site conditions with other team members in a timely manner for collaboration and problem solving.

[0033] Step S5 uses the mobile management port to enable managers to obtain and process project information anytime and anywhere, thereby enhancing the flexibility and response speed of project management, ensuring that the project proceeds smoothly as planned, and improving the efficiency and quality of construction management.

[0034] Furthermore, step S2 of the embodiment of the present application further includes: The GIS data is read, multi-source mapping integration is performed based on the same-name points, fitting reconstruction of the multi-source same-name point data is performed, and the GIS point cloud distribution is determined, wherein the GIS data includes multi-source heterogeneous geographic data, and the GIS point cloud distribution is located in the world coordinate system; the GIS point cloud distribution is traversed, and sensitive point cloud data and non-sensitive point cloud data are divided and determined; the GIS point cloud distribution is encrypted to determine the ciphertext point cloud data; the sensitive point cloud data and the non-sensitive point cloud data are integrated to determine the terrain scene point cloud.

[0035] Specifically, first, read the GIS data. These data usually come from a variety of sources, including remote sensing satellites, drone aerial photography, and ground measurements, and contain multi-source heterogeneous geographic data, such as topographic maps, vector data, and remote sensing images. Commonly used GIS software such as Esri ArcGIS and QGIS can be used to read and manage these data. Multi-source mapping integration is performed based on homonymous points. Homonymous points are points with the same geographical location in multi-source geographic data, which are used for data matching and integration. By identifying and matching these homonymous points, multi-source mapping integration technology is used, such as the Data Interoperability tool in ArcGIS, to integrate data from different sources into a unified geographic dataset.

[0036] Then, the multi-source homonymous point data is fitted and reconstructed. Use software such as Pix4D or Agisoft Metashape to perform geometric correction on each data source to ensure that the coordinate systems of all data sources are consistent, eliminate any distortion caused by sensors or projections, and unify the coordinate systems of multi-source geographic data. Use the least squares method or other optimization algorithms to accurately match and adjust the homonymous points to ensure that all data sources are aligned in the same coordinate system. Based on the optimized homonymous points, dense three-dimensional point cloud data is generated. The point cloud data includes the elevation information, slope, surface features, etc. of the terrain. The generated point cloud data is checked to ensure its accuracy and consistency. If necessary, manual adjustments are made to eliminate any residual errors. These point cloud data are distributed in the world coordinate system, reflecting the spatial position of the actual terrain and objects.

[0037] Next, the generated GIS point cloud distribution is traversed and divided into sensitive point cloud data and non-sensitive point cloud data. Sensitive point cloud data includes geographic information that may involve privacy or security, such as the location of critical infrastructure, while non-sensitive point cloud data does not contain this information. The GIS point cloud distribution is encrypted to ensure data security. The point cloud data is encrypted using an encryption algorithm to generate ciphertext point cloud data.

[0038] Finally, the sensitive point cloud data and non-sensitive point cloud data are integrated to generate terrain scene point cloud. These data can be used for subsequent BIM model integration and construction planning to ensure that the building design is highly consistent with the terrain environment.

[0039] Through the above steps, the integrity and security of geographic data can be ensured, accurate terrain information can be provided for building design and construction, and the efficiency and quality of project management can be improved.

[0040] Preferably, Figure 2 As shown, in step S2 of the embodiment of the present application, the GIS point cloud distribution is encrypted to determine the ciphertext point cloud data, and further includes: Construct an encrypted database, wherein the encrypted database includes an encryption algorithm and a key pair, and the key pair includes a symmetric key pair and an asymmetric key pair; for the sensitive point cloud data, traverse the encrypted database to determine encryption features, wherein the encryption features include a target encryption algorithm and a key length; perform hash function processing on the sensitive point cloud data to determine a target fingerprint code, and perform key processing based on the encryption features, and merge the encryption features with the public key to determine the ciphertext point cloud data.

[0041] Specifically, the encryption database is a database that stores algorithms and key pairs used to encrypt and decrypt data. A key pair is a key consisting of a public key and a private key, which is used to encrypt and decrypt data. It includes symmetric key pairs and asymmetric key pairs. A symmetric key pair is a key pair that uses the same key for encryption and decryption. An asymmetric key pair is a key pair that uses different keys for encryption and decryption, with the public key used for encryption and the private key used for decryption. Encryption features include information such as the target encryption algorithm and key length, which are used to determine how to encrypt data. A hash function is a function that converts an input of arbitrary length into an output of a fixed length, and the output is called a hash value or fingerprint. The target fingerprint is a unique identifier generated by processing sensitive point cloud data through a hash function. Ciphertext point cloud data is point cloud data that has been encrypted.

[0042] First, build an encryption database. This database is used to store various encryption algorithms and key pairs. The encryption database should contain symmetric key pairs and asymmetric key pairs, as well as the key length corresponding to each encryption algorithm. You can use a database management system such as MySQL or PostgreSQL to build and manage this encryption database.

[0043] Next, traverse the encryption database and determine the encryption features. For each sensitive point cloud data that needs to be encrypted, traverse the database and select the appropriate encryption algorithm and key length. The encryption features include the target encryption algorithm, such as AES, RSA, etc., and the key length, such as 128 bits, 256 bits, etc. You can use SQL queries or Python scripts to traverse the database and select appropriate encryption features. For example, use a Python script to query the database and select the AES algorithm and 256-bit key length.

[0044] Then, the sensitive point cloud data is processed using a hash function to generate a unique target fingerprint. The hash function ensures the consistency and integrity of the data, and the generated hash value is used as a unique identifier for the data. For example, Python's hashlib library can be used for hash function processing.

[0045] Finally, according to the selected encryption algorithm and key length, the corresponding key is generated or selected. For symmetric encryption, the same key is used for encryption and decryption; for asymmetric encryption, the public key is used for encryption and the private key is used for decryption. The target fingerprint code is used as input, and the encryption algorithm and public key are used for encryption processing to generate ciphertext point cloud data.

[0046] Through the above steps, sensitive point cloud data is encrypted to generate ciphertext point cloud data, which can be securely stored and transmitted to ensure data security and privacy.

[0047] Furthermore, the construction management module described in step S3 of the embodiment of the present application is a multi-network layer structure, including a monitoring and acquisition layer, a transmission and storage layer, a data sorting layer, and a data processing layer, wherein the construction management module is expandable, the data sorting layer is used to perform pre-processing of GIS data and BIM data, and the data processing layer has the optimized BIM model built in.

[0048] Specifically, the construction management module constructed in step S3 is a multi-network layer structure, including a monitoring and acquisition layer, a transmission and storage layer, a data sorting layer, and a data processing layer. Among them, the monitoring and acquisition layer is responsible for real-time monitoring and collection of construction site data, including sensor data, on-site images and videos, etc. The transmission and storage layer is responsible for transmitting the collected data to the storage system and storing the data securely. The data sorting layer is responsible for pre-processing the collected GIS data and BIM data, including data cleaning, format conversion and integration. The data processing layer has a built-in optimized BIM model, which is responsible for analyzing and applying the processed data to support project planning, design and construction management.

[0049] The monitoring and collection layer monitors and collects construction data in real time by deploying sensors, cameras, drones and other equipment at the construction site. These data can include environmental monitoring data, such as temperature, humidity, etc., construction progress images and videos, and other sensor data. The transmission and storage layer uses cloud storage services or local storage solutions to transmit the data collected by the monitoring and collection layer to the cloud storage system or local server through a wireless network or a wired network. Ensure the security and reliability of data transmission, and back up and store the data. The data collation layer uses data processing software and programming languages, such as FME and Python, to pre-process the GIS data and BIM data stored in the transmission and storage layer. Preprocessing includes data cleaning, that is, removing redundant and erroneous data, format conversion and data integration, that is, integrating GIS data with BIM data. The optimized BIM model is built into the data processing layer. The processed data is used to analyze and apply the project to support the planning, design and construction management of the project. The data processing layer can perform building functional simulation, collision detection and optimization. The multi-network layer structure of the construction management module ensures efficient data collection, transmission, storage and processing, so that project managers can monitor construction progress and environmental conditions in real time, conduct accurate data analysis and application, and thus improve the efficiency and accuracy of prefabricated building construction management.

[0050] Further, such as Figure 3 As shown, step S4 of the embodiment of the present application also includes: Based on the building quality standards, multi-dimensional functional standards are determined; the multi-dimensional functional standards are traversed, the functional standards are allocated based on the entire construction cycle, and the node functional standards of the project promotion nodes are determined; based on the node functional standards, static quality analysis and dynamic functional simulation are performed on the optimized BIM model to locate construction defects, wherein the construction defects at least include construction progress, risk factors and collision structures.

[0051] Specifically, first, according to the building quality standards, determine the performance requirements of the building in multiple dimensions, that is, multi-dimensional functional standards. Multi-dimensional functional standards are functional requirements in multiple dimensions determined based on building quality standards. These standards cover multiple dimensions such as structural safety, energy efficiency, comfort, and safety. Building quality standards refer to a series of regulations, standards, and guidelines used to evaluate and ensure building quality. They are used to ensure that the construction project achieves the expected quality level during the design, construction, and operation stages, and are usually determined with reference to industry specifications and regulations.

[0052] Next, based on the entire construction cycle, the determined multi-dimensional functional standards are traversed, these standards are allocated to the various stages and nodes of the construction project, and the node functional standards of the project promotion nodes are determined. The functional standards of each node are concretized as detailed requirements for that stage. This helps to ensure that specific functional requirements are met at each stage. Among them, the entire construction cycle refers to the entire life cycle of a construction project from design, construction to operation and maintenance. Project promotion nodes refer to key time points or stages in a construction project, such as design completion, construction start, etc. Node functional standards are specific functional requirements determined at each project promotion node based on building quality standards.

[0053] Use BIM analysis software and simulation tools to conduct static quality analysis on the optimized BIM model to evaluate the performance of the building under static conditions, such as structural stability, material strength, etc. Then, perform dynamic functional simulation to evaluate the performance of the building in actual use, such as crowd distribution, energy consumption, etc. During the static quality analysis and dynamic functional simulation process, identify and locate construction defects. Construction defects refer to problems or deficiencies that may occur during the construction process. These defects include at least construction progress, risk factors, and collision structures.

[0054] Through the above steps, it can be ensured that the construction project meets the predetermined quality standards at all stages, and potential problems and risks can be discovered and resolved in a timely manner, thereby improving the efficiency and reliability of prefabricated building construction management.

[0055] Preferably, step S4 of the embodiment of the present application further includes: The collision structure is traversed to determine the collision characteristics, wherein the collision types include the same type of structure collision and the different type of structure collision; based on the structure type and the building structure function, the avoidance priority is determined; with the avoidance priority as a constraint, the collision characteristics are traversed to perform construction optimization and determine the construction optimization strategy; the construction optimization strategy is added to the construction management strategy.

[0056] Specifically, use the collision detection function of the BIM software to traverse all components in the building model and identify collision structures. The collision detection tool can automatically scan the building model to find all potential collision points. For each collision point, record the collision characteristics, including the collision type and the specific collision location and nature. The collision characteristics are used to describe the type and nature of the collision structure, including the collision of the same structure and the collision of different structures. The collision of the same structure refers to the collision between components of the same type, such as the collision between two pipes. The collision of different structures refers to the collision between components of different types, such as the collision between a pipe and a steel beam.

[0057] Based on the construction type and building structure function, the avoidance priority of each collision component is determined. Generally, components with more important functions have higher avoidance priorities. For example, main structural beams usually have higher priorities than auxiliary pipes. Avoidance priority refers to determining which component should be avoided first during the collision optimization process based on the construction type and building structure function. Use BIM optimization tools, such as Dynamo for Revit, or programming languages, such as Python, to perform automated optimization analysis, with avoidance priority as a constraint, traverse all collision features, and find the best solution, that is, the construction optimization strategy. Solve the collision problem by adjusting the position or design of low-priority components. Among them, the construction optimization strategy is the specific method and steps to solve the collision problem, ensuring that the construction proceeds smoothly and meets the design requirements. Finally, the determined construction optimization strategy is integrated into the overall construction management strategy to ensure that the construction process is carried out according to the optimized plan.

[0058] For example, in a large hospital construction project, multiple collision problems between pipes and structural beams were found. Use the Clash Detection tool of Autodesk Navisworks to scan the building model and identify the collision points between pipes and structural beams. Record the characteristics of each collision point, including pipe type, location, beam type and location. Based on the functionality of the hospital building, determine that the structural beam has a higher avoidance priority, and the pipes should be adjusted. Use a custom Python script to automatically determine the avoidance priority of each component in combination with building functions and safety standards. Use Dynamo for Revit to adjust the position of the pipes with the avoidance priority as a constraint to ensure that the pipes are rearranged without affecting the structural beams. According to the optimization analysis results, formulate a specific pipe adjustment strategy. Incorporate the adjusted pipe layout plan into the Revit model and record all adjustment points. Use Revit to adjust the model to ensure that all pipes do not collide with other components in the new position. Update the project's construction management strategy and incorporate the adjusted pipe layout plan into the overall construction plan.

[0059] Through the above steps, collision problems in the building model can be efficiently identified and resolved, the construction plan can be optimized, and the project can be ensured to proceed smoothly as planned.

[0060] Furthermore, the method described in the embodiment of the present application also includes: An RFID system is introduced, wherein the RFID system is composed of electronic tags and RFID readers installed in building distribution areas; based on the RFID system, source-end construction monitoring and management are carried out, wherein the monitoring dimensions at least include personnel supervision, component stacking monitoring and assembly process monitoring.

[0061] Specifically, the RFID system is a system that uses wireless radio frequency identification technology for data collection and management. The RFID system consists of electronic tags and readers, which are used to identify and track objects. The electronic tag is a small device attached to the object, containing a unique identification code, which communicates with the RFID reader through radio waves. The RFID reader is used to read the information in the electronic tag and is usually installed in key locations in the distribution area of ​​the building to monitor and manage the tag information. Source-end construction monitoring and management refers to monitoring and management at the source of construction. The monitoring dimensions include personnel supervision, component stacking monitoring and assembly process monitoring, that is, real-time monitoring of personnel, components and assembly process.

[0062] The RFID system is introduced at the construction site. By installing electronic tags and RFID readers on building components and construction areas, real-time monitoring and management of the construction process can be achieved. Electronic tags are attached to building components, tools and equipment, and each tag contains a unique identification code. RFID readers are installed at key locations on the construction site, such as material storage areas, assembly areas, and entrances and exits to ensure that all tag information can be read. The RFID system is used for source-end construction monitoring and management to monitor personnel, components and assembly processes in real time. Exemplarily, personnel supervision can install RFID readers at the entrance of the construction site, and each worker wears a work card with an RFID tag. The reader can record the entry and exit of each worker in real time to ensure that the workers work according to the plan and improve safety. Component stacking monitoring monitors the storage location and status of each building component in real time by installing RFID readers in the material storage area. Managers can view the location of each component through the RFID system to prevent material loss or misuse. Assembly process monitoring can install RFID readers in the assembly area and the main construction area to track the assembly progress of components in real time. When each component assembly stage is completed, the on-site staff uses the reader to scan the electronic tag in the component. Each scan indicates the completion of a step. For example, the hoisting and placement is completed, the support system is installed, the grouting is completed, etc. In this way, the system can record the installation time and location of each component, ensure that the assembly process proceeds as planned, and provide real-time progress reports.

[0063] The introduction of the RFID system enables project managers to monitor personnel, materials and assembly progress at the construction site in real time, improving management efficiency and transparency.

[0064] Furthermore, step S5 of the embodiment of the present application further includes: Construct a mobile management port, wherein the mobile management port includes a client and a user interface, and is interconnected with the construction management module; set management permissions, configure the mobile management port based on the management permissions, and perform data verification and multi-functional online management of building construction through permission authentication.

[0065] Specifically, first, develop a mobile management port, including a client and a user interface. This port is usually built based on Web technology or mobile application development frameworks, such as React Native, Flutter, etc. The mobile management port and the construction management module can realize the interconnection of data and functions, and obtain and display project data in real time. Define different user roles and corresponding management permissions. Common user roles include project managers, engineers, site supervisors, and workers, each with different access rights and operation permissions. Configure user roles and permissions to the mobile management port so that different users can only access and operate data and functions within their authority after logging in. When the user logs in, perform permission authentication to ensure the legitimacy of the user's identity and permissions. After passing the permission authentication, the user can check the building construction data on the mobile terminal and perform multi-functional online management.

[0066] Through the above steps, a powerful mobile management port can be built, allowing users of different roles to perform data query and management operations on mobile devices according to their permissions. Permission authentication ensures data security and the legitimacy of access, and improves the efficiency and flexibility of project management.

[0067] In summary, the BIM and GIS integrated prefabricated building construction management method provided in the embodiment of the present application has the following technical effects: The BIM data is transmitted back and a four-dimensional simulation is performed to determine the four-dimensional BIM model, in which the model dimensions include the three-dimensional dimensions of the building and the project advancement dimensions, which intuitively displays the status of the building at different time nodes, and is helpful for the full management and monitoring of the project. The GIS data is transmitted back and the point cloud data is generated by air triangulation calculation, and the terrain scene point cloud is determined to accurately reflect the details and characteristics of the terrain, so that the design and construction of the construction project can fully consider the impact of the surrounding environment. The terrain scene point cloud and the four-dimensional BIM model are imported, integrated and fitted to determine the optimized BIM model, realizing the seamless integration of the building model and the geographic spatial data, making the model more in line with the actual environment. Combined with the network structure of the multi-functional layer, a construction management module is constructed, which can simulate the functional construction and collision detection and optimization during the construction process, discover and solve potential problems in the design and construction in advance, and ensure that all parts of the building design and construction process can be smoothly connected. Based on the construction management module, combined with the optimized BIM model, the building functional simulation and construction collision optimization are carried out to determine the construction management strategy, wherein the construction management strategy is marked with a modular strategy, which can effectively manage the various modular components of the building, ensure the coordination and efficient execution of various construction stages and modular components, and improve the systematicness and integrity of project management. In addition, the RFID system is introduced to carry out source-end construction monitoring and management, and monitor the personnel, components and assembly process of the entire construction process in real time. Combined with the mobile management port, the construction management strategy is terminally visualized and supervised, so that managers can understand the project progress and on-site conditions anytime and anywhere, and make timely adjustments and decisions.

[0068] In general, the embodiment of the present application integrates BIM and GIS data, uses four-dimensional simulation and point cloud data fitting to achieve seamless data sharing and integration, enhances the real-time monitoring and dynamic management capabilities of the project, and ensures the consistency and integrity of the data; and combines the optimized BIM model and construction management module to perform building functional simulation and construction collision optimization, determine the construction management strategy, and use the RFID system to track personnel, materials and construction progress throughout the project construction process in real time, optimize the building model and construction management process, thereby improving the efficiency and accuracy of prefabricated building construction management, and significantly improving the full life cycle management capabilities and construction quality of the construction project.

[0069] Embodiment 2, as Figure 4 As shown, the embodiment of the present application provides a prefabricated building construction management system integrating BIM and GIS, and the system includes: The four-dimensional BIM model generation unit 10 is used to return BIM data and perform four-dimensional simulation to determine a four-dimensional BIM model, wherein the model dimensions include the three-dimensional building and the project advancement dimensions.

[0070] The terrain scene point cloud generation unit 20 is used to transmit GIS data back and perform aerial triangulation calculation to generate point cloud data and determine the terrain scene point cloud.

[0071] The construction management module construction unit 30 is used to import, integrate and fit the terrain scene point cloud and the four-dimensional BIM model, determine the optimized BIM model, and combine the network structure of the multi-functional layer to construct a construction management module.

[0072] A management strategy generation unit 40 is used to perform building functionality simulation and construction collision optimization based on the construction management module and in combination with the optimized BIM model, and determine a construction management strategy, wherein the construction management strategy is identified by a modular strategy.

[0073] The construction supervision unit 50 is used to combine with the mobile management port to perform terminal visualization and construction supervision on the construction management strategy.

[0074] Furthermore, the terrain scene point cloud generation unit 20 of the embodiment of the present application is also used to perform the following steps: The GIS data is read, multi-source mapping integration is performed based on the same-name points, fitting reconstruction of the multi-source same-name point data is performed, and the GIS point cloud distribution is determined, wherein the GIS data includes multi-source heterogeneous geographic data, and the GIS point cloud distribution is located in the world coordinate system; the GIS point cloud distribution is traversed, and sensitive point cloud data and non-sensitive point cloud data are divided and determined; the GIS point cloud distribution is encrypted to determine the ciphertext point cloud data; the sensitive point cloud data and the non-sensitive point cloud data are integrated to determine the terrain scene point cloud.

[0075] Preferably, the terrain scene point cloud generation unit 20 of the embodiment of the present application is further configured to perform the following steps: Construct an encrypted database, wherein the encrypted database includes an encryption algorithm and a key pair, and the key pair includes a symmetric key pair and an asymmetric key pair; for the sensitive point cloud data, traverse the encrypted database to determine encryption features, wherein the encryption features include a target encryption algorithm and a key length; perform hash function processing on the sensitive point cloud data to determine a target fingerprint code, and perform key processing based on the encryption features, and merge the encryption features with the public key to determine the ciphertext point cloud data.

[0076] Furthermore, the construction management module of the construction management module construction unit 30 in the embodiment of the present application is a multi-network layer structure, including a monitoring and acquisition layer, a transmission and storage layer, a data sorting layer, and a data processing layer, wherein the construction management module is expandable, the data sorting layer is used to perform pre-processing of GIS data and BIM data, and the data processing layer has the optimized BIM model built in.

[0077] Furthermore, the management strategy generation unit 40 in the embodiment of the present application is also used to perform the following steps: Based on the building quality standards, multi-dimensional functional standards are determined; the multi-dimensional functional standards are traversed, the functional standards are allocated based on the entire construction cycle, and the node functional standards of the project promotion nodes are determined; based on the node functional standards, static quality analysis and dynamic functional simulation are performed on the optimized BIM model to locate construction defects, wherein the construction defects at least include construction progress, risk factors and collision structures.

[0078] Preferably, the management strategy generation unit 40 in the embodiment of the present application is further configured to perform the following steps: The collision structure is traversed to determine the collision characteristics, wherein the collision types include the same type of structure collision and the different type of structure collision; based on the structure type and the building structure function, the avoidance priority is determined; with the avoidance priority as a constraint, the collision characteristics are traversed to perform construction optimization and determine the construction optimization strategy; the construction optimization strategy is added to the construction management strategy.

[0079] Furthermore, the system described in the embodiment of the present application is also used to perform the following steps: An RFID system is introduced, wherein the RFID system is composed of electronic tags and RFID readers installed in building distribution areas; based on the RFID system, source-end construction monitoring and management are carried out, wherein the monitoring dimensions at least include personnel supervision, component stacking monitoring and assembly process monitoring.

[0080] Furthermore, the construction supervision unit 50 of the embodiment of the present application is also used to perform the following steps: Construct a mobile management port, wherein the mobile management port includes a client and a user interface, and is interconnected with the construction management module; set management permissions, configure the mobile management port based on the management permissions, and perform data verification and multi-functional online management of building construction through permission authentication.

[0081] Through the above detailed description of the prefabricated building construction management method integrated with BIM and GIS, those skilled in the art can clearly understand the prefabricated building construction management system integrated with BIM and GIS in this embodiment. For the system disclosed in Example 2, since it corresponds to the method disclosed in Example 1 and has corresponding functional units and beneficial effects, the relevant parts can be referred to the description of the method part.

[0082] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The method for prefabricated building construction management integrating BIM and GIS is characterized by: The method comprises: Return BIM data and conduct four-dimensional simulation to determine the four-dimensional BIM model, where the model dimensions include the three-dimensional building and the project advancement dimensions; Transmit GIS data back and perform aerial triangulation calculation to generate point cloud data to determine the terrain scene point cloud; Importing, integrating and fitting the terrain scene point cloud and the four-dimensional BIM model, determining and optimizing the BIM model, and combining the network structure of the multi-functional layer to construct a construction management module; Based on the construction management module and in combination with the optimized BIM model, building functionality simulation and construction collision optimization are performed to determine a construction management strategy, wherein the construction management strategy is identified by a modular strategy; Combined with the mobile management port, terminal visualization and construction supervision are performed on the construction management strategy.

2. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 1, characterized in that: The returning of GIS data and performing aerial triangulation calculation to generate point cloud data includes: Read the GIS data, perform multi-source mapping integration based on homonymous points, perform fitting reconstruction of multi-source homonymous point data, and determine GIS point cloud distribution, wherein the GIS data includes multi-source heterogeneous geographic data, and the GIS point cloud distribution is located in a world coordinate system; Traversing the GIS point cloud distribution, dividing and determining sensitive point cloud data and non-sensitive point cloud data; Encrypting the GIS point cloud distribution to determine ciphertext point cloud data; The sensitive point cloud data and the non-sensitive point cloud data are integrated to determine the terrain scene point cloud.

3. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 2, characterized in that: The GIS point cloud distribution is encrypted to determine the ciphertext point cloud data, including: Constructing an encrypted database, wherein the encrypted database includes an encryption algorithm and a key pair, and the key pair includes a symmetric key pair and an asymmetric key pair; For the sensitive point cloud data, traverse the encryption database to determine encryption features, wherein the encryption features include a target encryption algorithm and a key length; The sensitive point cloud data is processed by a hash function to determine a target fingerprint code, and key processing is performed based on the encryption feature, and the code is combined with the public key to determine the ciphertext point cloud data.

4. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 1, characterized in that: The construction management module is a multi-network layer structure, including a monitoring and acquisition layer, a transmission and storage layer, a data sorting layer, and a data processing layer. The construction management module is expandable, the data sorting layer is used to perform pre-processing of GIS data and BIM data, and the data processing layer has the optimized BIM model built in.

5. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 1, characterized in that: The building functional simulation includes: Determine multi-dimensional functional standards based on building quality standards; Traversing the multi-dimensional functional standards, allocating the functional standards based on the entire construction cycle, and determining the node functional standards of the project advancement nodes; Based on the node function standards, static quality analysis and dynamic functional simulation are performed on the optimized BIM model to locate construction defects, wherein the construction defects at least include construction progress, risk factors and collision structures.

6. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 5, characterized in that: The construction defects include collision structures, including: Traversing the collision structure to determine collision characteristics, wherein the collision type includes collision of the same structure and collision of different structures; Determine avoidance priorities based on structural type and building structure function; Taking the avoidance priority as a constraint, traversing the collision features to perform construction optimization and determine a construction optimization strategy; The construction optimization strategy is added to the construction management strategy.

7. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 1, characterized in that: The method further comprises: Introducing an RFID system, wherein the RFID system is composed of electronic tags and RFID readers installed in building distribution areas; Based on the RFID system, source-end construction monitoring and management are performed, wherein the monitoring dimensions at least include personnel supervision, component stacking monitoring, and assembly process monitoring.

8. The method for prefabricated building construction management integrating BIM and GIS as claimed in claim 1, characterized in that: Performing terminal visualization and construction supervision on the construction management strategy, the method further includes: Building a mobile management port, wherein the mobile management port includes a client and a user interface and is interconnected with the construction management module; Management authority is set, the mobile management port is configured based on the management authority, and data verification and multi-functional online management of building construction are performed through authority authentication.

9. The prefabricated building construction management system integrated with BIM and GIS is characterized by: The method for managing the construction of prefabricated buildings integrated with BIM and GIS according to any one of claims 1 to 8 comprises: A four-dimensional BIM model generation unit, which is used to transmit BIM data back and perform four-dimensional simulation to determine a four-dimensional BIM model, wherein the model dimensions include the three-dimensional building and the project advancement dimensions; A terrain scene point cloud generation unit, which is used to transmit GIS data back and perform aerial triangulation calculation to generate point cloud data and determine the terrain scene point cloud; A construction management module construction unit, the construction management module construction unit is used to import, integrate and fit the terrain scene point cloud and the four-dimensional BIM model, determine and optimize the BIM model, and combine the network structure of the multi-functional layer to construct a construction management module; A management strategy generating unit, the management strategy generating unit is used to perform building functionality simulation and construction collision optimization based on the construction management module and in combination with the optimized BIM model, and determine a construction management strategy, wherein the construction management strategy is identified by a modular strategy; A construction supervision unit is used to combine with a mobile management port to perform terminal visualization and construction supervision on the construction management strategy.

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