Method for assisting open caisson foundation construction through three-dimensional geologic model based on BIM and GIS fusion

Abstract

The invention relates to the technical field of engineering management, in particular to a method for assisting open caisson foundation construction through a three-dimensional geologic model based on BIM and GIS fusion, and the method comprises the steps: collecting engineering data, and constructing a three-dimensional live-action model based on the engineering data; geological exploration data are collected, and a three-dimensional geological model is constructed based on the geological exploration data; superposing the three-dimensional geologic model and the three-dimensional live-action model based on the coordinate information; and an open caisson foundation construction management platform is built, and the overlapped model is integrated in the open caisson foundation construction management platform. By providing high-precision geological information and a visual construction view, the problems that in open caisson foundation construction, the sinking rate is difficult to control, the posture adjusting difficulty is large, and the stress condition is complex are effectively solved, and the construction safety and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of engineering management technology, and in particular to a method for assisting caisson foundation construction using a three-dimensional geological model based on the fusion of BIM and GIS. Background Art

[0002] In the field of foundation engineering construction, caisson foundation construction, as a common deep foundation construction method, is widely used in the foundation construction of bridges, docks and large buildings. The caisson foundation mainly relies on its own weight to overcome the friction between the caisson wall and the soil and the resistance of the blade end, so that the caisson gradually sinks to the designed elevation. However, the caisson foundation construction process involves complex geological conditions. The uncertainty and invisibility of the geological conditions often bring great technical challenges. Especially during the sinking process, it is difficult for construction workers to understand the geological conditions under the caisson in real time, which brings considerable difficulties to the control of construction progress, the rational formulation of construction plans and safe construction.

[0003] Traditional geological exploration technologies, such as drilling sampling, geological radar and magnetic exploration, can provide certain underground geological information, but these data are often presented in two-dimensional form and are mostly expressed in written reports. This expression method has high requirements for professional and technical personnel, and the exploration results are relatively abstract, making it difficult to intuitively display the spatial distribution and geological structure of underground strata, resulting in low application efficiency of geological information and increasing the difficulty of understanding and application during construction. At the same time, with the development of surveying and mapping technology, technical means such as RTK drones, three-dimensional laser radars, and oblique photogrammetry are gradually applied to data collection work within the scope of the project. These technologies can generate high-precision terrain data, high-definition orthophotos, and high-resolution three-dimensional real-life models, so that construction personnel can clearly understand the terrain undulations, surrounding environment, and infrastructure distribution of the project site. However, these real-life models are mainly used to reflect the topographic and geomorphic features of the surface, and it is difficult to provide information on the strata below the surface, and cannot meet the comprehensive understanding of the underground geological conditions during the construction of the caisson foundation.

[0004] In summary, in the construction of caisson foundation, due to the complex stress conditions during the sinking process and the ever-changing geological conditions, there are many challenges in the construction, such as the difficulty in controlling the sinking rate of the caisson, the difficulty in adjusting the caisson posture, the complex stress conditions, and the difficulty in mastering the structural safety. Therefore, the demand for geological information during the construction process is very urgent, and it is urgent to obtain, integrate and display underground geological information through more advanced and intuitive technical means to improve the safety and effectiveness of construction. Summary of the invention

[0005] This application provides a method for assisting caisson foundation construction with a three-dimensional geological model based on the integration of BIM and GIS. By providing high-precision geological information and intuitive construction views, it effectively solves the problems of difficult sinking rate control, difficult posture adjustment, and complex stress conditions in caisson foundation construction, thereby improving construction safety and efficiency. This application provides the following technical solutions:

[0006] In a first aspect, the present application provides a method for assisted caisson foundation construction based on a three-dimensional geological model fused with BIM and GIS, the method comprising:

[0007] Collect engineering data and build a 3D real-scene model based on the engineering data;

[0008] Collect geological exploration data and build a three-dimensional geological model based on the geological exploration data;

[0009] Overlaying the 3D geological model with the 3D real scene model based on coordinate information;

[0010] Build a caisson foundation construction management platform and integrate the superimposed models into the caisson foundation construction management platform.

[0011] In a specific implementation scheme, collecting engineering data and constructing a three-dimensional real scene model based on the engineering data includes:

[0012] Configure the RTK module to obtain the terrain data of the construction site through aerial mapping;

[0013] Choose a 3D LiDAR system to record the 3D structure of the terrain in the form of a point cloud;

[0014] Equipped with five lenses to obtain surface image data from different angles.

[0015] In a specific implementation scheme, the collecting of engineering data and constructing a three-dimensional real scene model based on the engineering data further includes:

[0016] Use RTK drones to fly on a preset route to conduct topographic mapping of the entire construction area;

[0017] Through multiple measurements, a high-precision terrain dataset covering the entire construction site is generated;

[0018] The construction site was scanned using 3D LiDAR, and a five-lens tilt camera was used to photograph the construction area from multiple angles;

[0019] Combine multi-angle images to generate high-precision three-dimensional real-scene models.

[0020] In a specific implementation scheme, the collecting of geological exploration data and constructing a three-dimensional geological model based on the geological exploration data includes:

[0021] Use modern exploration technology to detect the geological conditions within the construction scope;

[0022] The GIS system is used to uniformly process and convert data in different formats, and the acquired geological exploration data is reconstructed in three dimensions, including the precise positioning of the detected geological layers and obstacles in three-dimensional space, and the generation of corresponding three-dimensional geological models.

[0023] In a specific possible implementation scheme, superimposing the three-dimensional geological model with the three-dimensional real scene model based on the coordinate information includes:

[0024] Convert the 3D geological model and 3D real scene model to a unified coordinate system, determine the common coordinate system, and apply the following coordinate conversion matrix:

[0025]

[0026] Among them, θ is the rotation angle of the model on the two-dimensional plane, tx is the translation of the model in the X-axis direction, and ty is the translation of the model in the Y-axis direction. The geological model and the real scene model are transformed by applying the above matrix;

[0027] Extract obvious feature points from the geological model and the real scene model, and use the iterative closest point algorithm of the existing technology to optimize the alignment of the models;

[0028] The aligned geological model and the real scene model are integrated.

[0029] In a specific possible implementation scheme, the construction of the caisson foundation construction management platform and the integration of the superimposed model into the caisson foundation construction management platform include:

[0030] Prepare and display a detailed schedule for caisson foundation construction on the caisson foundation construction management platform, and associate the key nodes and construction tasks of the schedule with the relevant parts in the overlay model;

[0031] Combine the obstacle removal plan with the obstacle information in the model, update the obstacle removal progress in real time, and display the status and clearance of obstacles in the model.

[0032] In a specific possible implementation scheme, the step of building a caisson foundation construction management platform and integrating the superimposed model into the caisson foundation construction management platform further includes:

[0033] Integrate the information of geological exploration reports into the caisson foundation construction management platform to provide support for construction decision-making;

[0034] Load construction process animations and phased plans into the platform and compare them with the actual situation in the model;

[0035] The real-time monitoring data of the site is uploaded to the platform and combined with the overlay model to display the real-time status and changes of the construction.

[0036] In the second aspect, the present application provides a system for assisting the construction of caisson foundations with a three-dimensional geological model based on the integration of BIM and GIS, which adopts the following technical solutions:

[0037] A system for assisted caisson foundation construction based on a three-dimensional geological model integrated with BIM and GIS, comprising:

[0038] A real-scene model building module is used to collect engineering data and build a three-dimensional real-scene model based on the engineering data;

[0039] A geological model building module is used to collect geological exploration data and build a three-dimensional geological model based on the geological exploration data;

[0040] A model overlay module is used to overlay the three-dimensional geological model with the three-dimensional real scene model based on coordinate information;

[0041] The model integration module is used to build a caisson foundation construction management platform and integrate the superimposed models into the caisson foundation construction management platform.

[0042] In a third aspect, the present application provides an electronic device comprising a processor and a memory; a program is stored in the memory, and the program is loaded and executed by the processor to implement a method for assisted caisson foundation construction based on a three-dimensional geological model fusion of BIM and GIS as described in the first aspect.

[0043] In a fourth aspect, the present application provides a computer-readable storage medium, in which a program is stored. When the program is executed by a processor, it is used to implement a method for assisted caisson foundation construction based on a three-dimensional geological model fusion of BIM and GIS as described in the first aspect.

[0044] In summary, the beneficial effects of this application include at least:

[0045] 1) By accurately superimposing the 3D geological model with the 3D real-life model, the morphology and distribution of underground geological bodies can be intuitively displayed, which improves the understanding of the underground environment at the construction site. This visualization effect helps the construction team to accurately grasp the geological conditions during the design and construction process, thereby optimizing the construction plan.

[0046] 2) The superposition model integrated in the caisson foundation construction management platform can realize real-time monitoring of the construction progress. By combining with the progress plan, obstacle clearance plan and real-time monitoring data, the platform supports dynamic adjustment of construction strategies, ensures the flexibility and adaptability of the construction process, and reduces uncertainty in construction.

[0047] 3) Integrating geological survey reports, construction process animations and phased plans into the management platform can provide detailed construction guidance and real-time data support for on-site technicians. This comprehensive information integration improves the quality of decision-making during the construction process and reduces safety hazards and construction delays caused by changes in geological conditions.

[0048] By integrating high-precision geological exploration data with three-dimensional real-scene models, accurate superposition of the two is achieved based on coordinate information. First, a detailed three-dimensional real-scene model is constructed using RTK drones, three-dimensional laser radars, and oblique photography technology, and a three-dimensional geological model is constructed using modern geological exploration technology. Then, through the unified coordinate system and feature point matching technology, the geological model and the real-scene model are seamlessly superimposed to form a comprehensive three-dimensional view of underground geological information and surface conditions. Finally, the superimposed model is integrated into the caisson foundation construction management platform to provide visual progress management, real-time monitoring, and dynamic adjustment functions. By providing high-precision geological information and intuitive construction views, this solution effectively solves the problems of difficult sinking rate control, difficult posture adjustment, and complex stress conditions in caisson foundation construction, thereby improving construction safety and efficiency.

[0049] 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 and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a flow chart of a method for assisting caisson foundation construction using a three-dimensional geological model based on the fusion of BIM and GIS in an embodiment of the present application.

[0051] Figure 2 It is a schematic diagram of the process of constructing a three-dimensional real scene model in an embodiment of the present application.

[0052] Figure 3 It is a schematic diagram of the process of constructing a three-dimensional geological model based on geological exploration data in an embodiment of the present application.

[0053] Figure 4 It is a block diagram of an electronic device for assisting caisson foundation construction based on a three-dimensional geological model integrated with BIM and GIS in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0055] Optionally, the present application takes the method of using a three-dimensional geological model based on the fusion of BIM and GIS to assist in the construction of caisson foundation provided in each embodiment as an example for use in an electronic device, where the electronic device is a terminal or a server, and the terminal may be a mobile phone, a computer, a tablet computer, etc. This embodiment does not limit the type of electronic device.

[0056] Reference Figure 1 , is a flow chart of a method for assisted caisson foundation construction based on a three-dimensional geological model fused with BIM and GIS provided by an embodiment of the present application, the method comprising at least the following steps:

[0057] Step S101: collect engineering data and construct a three-dimensional real scene model based on the engineering data.

[0058] In step S101, Figure 2 First, before collecting engineering data, configure a high-precision RTK module to achieve centimeter-level positioning accuracy. RTK drones quickly obtain terrain data of construction sites through aerial mapping, especially in large areas or complex terrain areas, where its advantages are particularly significant. Choose a 3D lidar system with high resolution and high precision, which can record the three-dimensional structure of the terrain in the form of a point cloud. LiDAR scanning can capture subtle changes in the surface and provide dense spatial data for subsequent modeling. Equipped with five lenses (one vertically downward and four tilted angles), it can obtain surface image data from different angles. Oblique photography technology ensures that the model not only shows surface features, but also captures details such as the facade of the building, providing a high-resolution image foundation for the construction of real-life models.

[0059] Then, an RTK drone was used to fly on a preset route to map the entire construction area. The RTK system corrected the position data through real-time differential technology to ensure that the accuracy of the acquired terrain data was at the centimeter level. Through multiple measurements, a high-precision terrain data set covering the entire construction site was generated. At the same time, a three-dimensional laser radar was used to scan the construction site. The laser beam emitted by the laser radar is reflected back when it encounters the surface or other objects. The three-dimensional coordinates of each point are calculated by measuring the reflection time to form high-density point cloud data. These point cloud data can record the undulations of the terrain, surface vegetation and other objects in detail. A five-lens tilt camera is used to shoot the construction area from multiple angles. Through tilt photography, high-resolution image data can be obtained, which can show the texture, color and facade information of the surface in detail. Combined with multi-angle images, a high-precision three-dimensional real-life model is generated.

[0060] In the implementation, the collected RTK drone terrain data, 3D LiDAR point cloud data and oblique photography image data are integrated. Through the data fusion algorithm, the coordinate errors between different data sources are corrected to ensure the consistency and accuracy of the data. At this time, the GIS system is responsible for managing these spatial data and performing preliminary analysis and processing in this process. The GIS system is used for spatial registration and precision correction of data to ensure that all data are integrated in the same coordinate system and generate 3D terrain maps and image models. Using the processed RTK drone data and 3D LiDAR point cloud data, a high-precision terrain map with a scale of 1:500 is generated. This terrain map can describe the terrain undulations and geomorphic features of the construction site in detail, and is an important reference for subsequent construction design. Through the processing of oblique photography image data and the combination of point cloud data, a 3D real scene model with a resolution of 2cm is generated. This model not only shows the topography and geomorphology, but also reflects the spatial relationship and appearance details of buildings, roads and other objects in the construction site. At this stage, the initially generated real scene model is superimposed with the building and infrastructure data in the BIM model. The BIM model provides detailed building geometry information and attribute data. The GIS system is responsible for integrating these BIM data with the real-life model to form a preliminary three-dimensional digital model, providing a basis for subsequent construction management.

[0061] Step S102: Collect geological exploration data, and construct a three-dimensional geological model based on the geological exploration data.

[0062] In step S102, combining Figure 3First, modern exploration technology is used to conduct a detailed exploration of the geological conditions within the construction scope. Commonly used technologies include but are not limited to: high-precision magnetic method, geological radar, transient electromagnetic method, cross-hole electromagnetic wave CT and other technologies. The above technical methods can also be used in combination to generate a complete geological exploration data set for the construction area, covering information such as stratigraphic distribution, lithological characteristics and underground obstacles. The detected geological exploration results are usually presented in multiple formats (such as images, point clouds or tables). The data in different formats are uniformly processed and converted through the GIS system so that they can be analyzed and visualized on the same platform. Through data cleaning, format conversion and data fusion, the geological information is seamlessly integrated with the terrain data. Subsequently, the acquired geological exploration data is reconstructed in three dimensions using the GIS system. The process includes accurately locating the detected geological layers and obstacle positions in three-dimensional space and generating corresponding three-dimensional geological body models. Specifically, according to the exploration data, the construction site is divided into multiple geological layers, each of which represents different geological characteristics, such as rock layers, sand layers or groundwater layers. The boundaries, thickness and position of each layer are accurately modeled in three-dimensional space. Based on geological radar or other detection technologies, the location of underground obstacles (such as large rocks, abandoned pipelines, etc.) is determined and a three-dimensional model of the obstacles is generated. The GIS system provides a real-time three-dimensional visualization interface, and the geological model is intuitively displayed in three-dimensional space, including the morphology of geological layers, the distribution of obstacles, and their relationship with the construction area.

[0063] Step S103: superimpose the three-dimensional geological model and the three-dimensional real scene model based on the coordinate information.

[0064] In step S103, at the construction site, RTK (real-time kinematic differential) technology and a high-precision GPS system are usually used to obtain geospatial coordinates to ensure that the geological model and the real-scene model are based on the same coordinate system. The three-dimensional real-scene model generated by oblique photography already contains detailed topographic information, including the surface topography, surrounding environment, and road network of the construction site. Through these high-precision coordinate information, it is ensured that each geological layer and obstacle position in the geological model can be fully matched with the geographical location in the oblique photography model, thereby achieving seamless superposition between models.

[0065] In addition, oblique photography technology generates a three-dimensional real-life model of the surface through multi-angle image acquisition, showing the topography and building environment of the construction site. However, oblique photography only shows surface information, not underground geological conditions. Therefore, it is necessary to superimpose the three-dimensional geological model on the real-life model to show the geological body morphology and obstacle distribution below the surface. The GIS system is used to process and integrate these data. Through data conversion and fusion, data from different sources are integrated into the same coordinate system to achieve the superposition of models above and below the ground.

[0066] In practice, the three-dimensional geological model constructed by the acquired geological exploration data includes the morphology of the geological layer, lithological characteristics, location and distribution of obstacles. Using the three-dimensional modeling tools in the GIS system, the geological model can be superimposed in the same coordinate system as the real-life model to achieve a unified display of the above-ground and underground structures. When superimposing the geological model on the real-life model, the accuracy of the model must be guaranteed. Any deviation in the geological data will affect the accuracy after superposition, so multiple calibrations and verifications are required to ensure that the geological layer and the surface position in the real scene are completely consistent.

[0067] In another feasible embodiment, the 3D geological model and the 3D real scene model can also be converted to a unified coordinate system. First, a common coordinate system is determined, such as UTM or WGS84, and then the following coordinate conversion matrix is ​​applied:

[0068]

[0069] Among them, θ is the rotation angle, which is used to define the rotation angle of the model on the two-dimensional plane. The rotation angle is a key parameter for rotating the model to the correct position in the coordinate system. tx is the translation of the model in the X-axis direction. By adjusting this parameter, the model can be moved to the aligned position in the horizontal direction. ty is the translation of the model in the Y-axis direction. By adjusting this parameter, the model can be moved to the aligned position in the vertical direction. Apply the above matrix to the geological model and the real scene model for coordinate transformation to ensure that they are aligned in the same spatial coordinate system. This allows the two models to be superimposed in the same coordinate system to ensure accurate correspondence between their spatial positions.

[0070] Then, obvious feature points (such as geological layer boundaries and significant surface features) are extracted from the geological model and the real scene model, and these feature points are used for model alignment. The models are optimized and aligned using the iterative closest point algorithm of the prior art. The ICP algorithm improves the alignment accuracy by minimizing the distance between corresponding points between models. For example, the point-to-point error of the model is calculated:

[0071]

[0072] Among them, P i and Q i are the matching points in the geological model and the real-scene model, N is the number of points, and Error is the average point-to-point error. The aligned geological model and the real-scene model are fused. Use color coding or transparency adjustment to make the details of the two models visible at the same time. Collect the latest data through on-site sensors, and update the superposition status of the geological model and the real-scene model in real time based on these data. The above steps ensure the accurate superposition of the three-dimensional geological model and the real-scene model through methods such as coordinate system alignment, feature point matching, data fusion and real-time updating.

[0073] Step S104: construct a caisson foundation construction management platform, and integrate the superimposed model into the caisson foundation construction management platform.

[0074] In step S104, the superimposed model generated in step S103 (including the composite view of the 3D geological model and the 3D real scene model) is imported into the caisson foundation construction management platform. Ensure that the model can be accurately loaded and displayed in the platform for users to view. Implement the visualization display of the model in the platform, including the rotation, scaling and cutting functions of the model. Users can use these functions to view the construction area and geological conditions at different angles and depths.

[0075] In addition, a detailed schedule for the caisson foundation construction is compiled and displayed on the platform. The key nodes and construction tasks of the schedule are associated with the relevant parts in the superimposed model to facilitate real-time tracking and management. By combining the obstacle removal plan with the obstacle information in the model, the platform can update the obstacle removal progress in real time and display the status and removal of obstacles in the model.

[0076] By integrating the information of geological exploration reports into the platform, users can view geological data and exploration results in the overlay model to support construction decisions. By loading construction process animations and phased plans into the platform, users can intuitively understand the construction steps and processes through animations and compare them with the actual situation in the model. By uploading real-time on-site monitoring data to the platform and combining it with the overlay model, the real-time status and changes of the construction are displayed. Based on real-time data, the platform allows users to dynamically adjust construction plans and strategies to ensure the flexibility and adaptability of the construction process.

[0077] In summary, by integrating high-precision geological exploration data with three-dimensional real-scene models, accurate superposition of the two is achieved based on coordinate information. First, a detailed three-dimensional real-scene model is constructed using RTK drones, three-dimensional laser radars, and oblique photography technology, and a three-dimensional geological model is constructed using modern geological exploration technology. Then, through the unified coordinate system and feature point matching technology, the geological model and the real-scene model are seamlessly superimposed to form a comprehensive three-dimensional view of underground geological information and surface conditions. Finally, the superimposed model is integrated into the caisson foundation construction management platform to provide visual progress management, real-time monitoring, and dynamic adjustment functions. This solution effectively solves the problems of difficult sinking rate control, difficult posture adjustment, and complex force conditions in caisson foundation construction by providing high-precision geological information and intuitive construction views, thereby improving construction safety and efficiency.

[0078] The present application also provides a system for assisting caisson foundation construction based on a three-dimensional geological model integrated with BIM and GIS, the system comprising at least the following modules:

[0079] A real-scene model building module is used to collect engineering data and build a three-dimensional real-scene model based on the engineering data;

[0080] A geological model building module is used to collect geological exploration data and build a three-dimensional geological model based on the geological exploration data;

[0081] A model overlay module is used to overlay the three-dimensional geological model with the three-dimensional real scene model based on coordinate information;

[0082] The model integration module is used to build a caisson foundation construction management platform and integrate the superimposed models into the caisson foundation construction management platform.

[0083] For relevant details, refer to the above method embodiment.

[0084] Figure 4 4 is a block diagram of an electronic device provided by an embodiment of the present application. The device at least includes a processor 401 and a memory 402.

[0085] The processor 401 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 401 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 401 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 401 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 401 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0086] The memory 402 may include one or more computer-readable storage media, which may be non-transitory. The memory 402 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 402 is used to store at least one instruction, which is used to be executed by the processor 401 to implement the method for the three-dimensional geological model-assisted caisson foundation construction based on BIM and GIS fusion provided in the method embodiment of the present application.

[0087] In some embodiments, the electronic device may further optionally include: a peripheral device interface and at least one peripheral device. The processor 401, the memory 402 and the peripheral device interface may be connected via a bus or a signal line. Each peripheral device may be connected to the peripheral device interface via a bus, a signal line or a circuit board. Schematically, the peripheral devices include but are not limited to: a radio frequency circuit, a touch display screen, an audio circuit, and a power supply.

[0088] Of course, the electronic device may also include fewer or more components, which is not limited in this embodiment.

[0089] Optionally, the present application also provides a computer-readable storage medium, in which a program is stored, and the program is loaded and executed by a processor to implement the method of three-dimensional geological model-assisted caisson foundation construction based on BIM and GIS fusion of the above-mentioned method embodiment.

[0090] Optionally, the present application also provides a computer product, which includes a computer-readable storage medium, in which a program is stored, and the program is loaded and executed by a processor to implement the method of three-dimensional geological model-assisted caisson foundation construction based on BIM and GIS fusion in the above-mentioned method embodiment.

[0091] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS, characterized in that: The method comprises: Collect engineering data and build a 3D real-scene model based on the engineering data; Collect geological exploration data and build a three-dimensional geological model based on the geological exploration data; Overlaying the 3D geological model with the 3D real scene model based on coordinate information; Build a caisson foundation construction management platform and integrate the superimposed models into the caisson foundation construction management platform.

2. The method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS according to claim 1 is characterized in that: The collecting of engineering data and constructing a three-dimensional real scene model based on the engineering data includes: Configure the RTK module to obtain the terrain data of the construction site through aerial mapping; Choose a 3D LiDAR system to record the 3D structure of the terrain in the form of a point cloud; Equipped with five lenses to obtain surface image data from different angles.

3. The method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS according to claim 1 is characterized in that: The collecting of engineering data and constructing a three-dimensional real scene model based on the engineering data further includes: Use RTK drones to fly on a preset route to conduct topographic mapping of the entire construction area; Through multiple measurements, a high-precision terrain dataset covering the entire construction site is generated; The construction site was scanned using 3D LiDAR, and a five-lens tilt camera was used to photograph the construction area from multiple angles; Combine multi-angle images to generate high-precision three-dimensional real-scene models.

4. The method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS according to claim 1 is characterized in that: The collecting of geological exploration data and constructing a three-dimensional geological model based on the geological exploration data includes: Use modern exploration technology to detect the geological conditions within the construction scope; The GIS system is used to uniformly process and convert data in different formats, and the acquired geological exploration data is reconstructed in three dimensions, including the precise positioning of the detected geological layers and obstacles in three-dimensional space, and the generation of corresponding three-dimensional geological models.

5. The method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS according to claim 1 is characterized in that: The superimposing of the three-dimensional geological model and the three-dimensional real scene model based on the coordinate information includes: Convert the 3D geological model and 3D real scene model to a unified coordinate system, determine the common coordinate system, and apply the following coordinate conversion matrix: Among them, θ is the rotation angle of the model on the two-dimensional plane, tx is the translation of the model in the X-axis direction, and ty is the translation of the model in the Y-axis direction. The geological model and the real scene model are transformed by applying the above matrix; Extract obvious feature points from the geological model and the real scene model, and use the iterative closest point algorithm of the existing technology to optimize the alignment of the models; The aligned geological model and the real scene model are integrated.

6. The method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS according to claim 1 is characterized in that: The construction of the caisson foundation construction management platform and the integration of the superimposed model into the caisson foundation construction management platform include: Prepare and display a detailed schedule for caisson foundation construction on the caisson foundation construction management platform, and associate the key nodes and construction tasks of the schedule with the relevant parts in the overlay model; Combine the obstacle removal plan with the obstacle information in the model, update the obstacle removal progress in real time, and display the status and clearance of obstacles in the model.

7. The method for caisson foundation construction assisted by a three-dimensional geological model based on the fusion of BIM and GIS according to claim 1 is characterized in that: The step of building a caisson foundation construction management platform and integrating the superimposed model into the caisson foundation construction management platform further includes: Integrate the information of geological exploration reports into the caisson foundation construction management platform to provide support for construction decision-making; Load construction process animations and phased plans into the platform and compare them with the actual situation in the model; The real-time monitoring data of the site is uploaded to the platform and combined with the overlay model to display the real-time status and changes of the construction.

8. A system for assisted caisson foundation construction based on a three-dimensional geological model integrated with BIM and GIS, characterized in that: include: A real-scene model building module is used to collect engineering data and build a three-dimensional real-scene model based on the engineering data; A geological model building module is used to collect geological exploration data and build a three-dimensional geological model based on the geological exploration data; A model overlay module is used to overlay the three-dimensional geological model with the three-dimensional real scene model based on coordinate information; The model integration module is used to build a caisson foundation construction management platform and integrate the superimposed models into the caisson foundation construction management platform.

9. An electronic device, characterized in that: The device includes a processor and a memory; a program is stored in the memory, and the program is loaded and executed by the processor to implement a method for assisted caisson foundation construction based on a three-dimensional geological model fused with BIM and GIS as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores a program, which, when executed by a processor, is used to implement a method for assisted caisson foundation construction based on a three-dimensional geological model fused with BIM and GIS as described in any one of claims 1 to 7.

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