Large thickener high-precision lofting and positioning construction control method and system

Abstract

The invention relates to the technical field of civil construction of large-scale thickening equipment, and discloses a high-precision lofting and positioning construction control method and system for a large-scale thickener, and the method comprises the following steps: constructing a building information model of a thickener pool body, and associating related technical information of corresponding components; based on the building information model, setting-out point data are generated through parametric programming, and then a formwork system deepening design scheme and a pouring planning scheme are generated; on-site construction management and control are carried out in combination with the visualization technology, and after construction is completed, high-precision acceptance check is achieved through comparison of measured data and the building information model. Through deep fusion of BIM and parameterized programming, a full-process closed-loop construction control system is constructed, the core technical problem of ultra-large thickener construction is solved, and multiple breakthroughs are achieved in the aspects of construction precision, quality reliability, operation efficiency, cost control, industry technology upgrading and the like.

Description

Technical Field

[0001] This invention relates to the field of civil engineering construction technology for large-scale thickening equipment, and in particular to a high-precision layout and positioning construction control method and system for large-scale thickening machines. Background Technology

[0002] Large thickeners, as core equipment in metallurgy, mining, chemical, and hydrometallurgical industries, undertake key process functions such as media sedimentation and separation. The quality of their civil engineering construction directly determines their operating efficiency and service life. With the development of industrial scale, thickener specifications continue to increase, and structural designs become increasingly complex, exhibiting characteristics such as large diameters, thick inclined plates, and radial compartments. Figure 1 As shown, it also needs to meet the requirements for containing highly corrosive media, which places stringent demands on construction accuracy, structural stability, and self-waterproofing performance.

[0003] The construction of ultra-large thickeners currently faces multiple core technical challenges: First, precision control is extremely difficult. The complex spatial curved surface structure has very high requirements for the deviation of the inclined plate slope and the roundness of the pool. Traditional manual layout and calculation methods are prone to errors and cannot meet the operational requirements of high-precision equipment. Second, the self-waterproofing of the structure is a significant challenge. During the pouring of thick plates, cracks are easily generated due to temperature stress. The highly corrosive environment further exacerbates the risk of leakage. Conventional construction processes cannot balance structural strength and waterproofing performance. Third, the coordination of construction organization is poor. The formwork system needs to be adapted to the stress characteristics of the thick inclined plate. If the concrete pouring path and loading method are not planned properly, it can easily lead to uneven load and structural deformation. Moreover, the construction of large equipment involves multiple processes and collaboration among multiple parties, resulting in high communication costs. Fourth, the efficiency of technical briefing is low. Traditional two-dimensional drawings cannot intuitively present the complex spatial structural relationships, leading to misunderstandings of key construction points among the participating parties and making it difficult to unify quality control standards.

[0004] To address these issues, the industry has begun to explore the use of Building Information Modeling (BIM) technology to assist construction. However, current applications largely remain at the level of basic 3D visualization, lacking deep integration with the entire construction process. While some related patented technologies have made beneficial explorations, they still have significant shortcomings and deficiencies.

[0005] For example, CN116702258A discloses an automated construction method and control system based on a BIM model. This method maps the 3D point cloud data of a region to the corresponding BIM model, automatically determines the work data for the wall surface, and plans work sites and paths for the region based on the navigation map and work data. This data is then sent to a robot, which automatically parses the work data of the area to be worked on and performs tasks such as grinding and grouting according to the planned work sites and paths. This enables intelligent operation of concrete forming surfaces in the building environment. Furthermore, by performing meshing and lightweight processing on the 3D point cloud data, the amount of data transmitted can be reduced, which is beneficial for improving data transmission and parsing efficiency. Dividing the area into work sites can reduce the height difference at splicing boundaries, achieving a uniform transition of work boundaries, and facilitating intelligent matching of work equipment configuration parameters.

[0006] The aforementioned automated construction methods focus on automated operations in conventional building areas, emphasizing basic processes such as wall grinding and grouting. They are not adapted to the special inclined plate structure and large-diameter pool characteristics of large thickeners, and lack integrated parametric optimization of the formwork system and pouring scheme, making it difficult to meet the high-precision positioning requirements of ultra-large structures.

[0007] For example, CN117828789A discloses a BIM-based inverted-lock construction method for thickeners. First, BIM is used to simulate the assembly process of the thickener's curved pool bottom plate and bottom beam. Then, based on the BIM simulation, the assembly of the thickener's curved pool is completed. The BIM-simulated assembly process includes the following steps: constructing individual component models of the bottom plate and bottom beam; dividing the bottom plate assembly into several fan-shaped inverted-lock module units; placing the top surface of the curved pool bottom plate in a single inverted-lock module unit downwards, and arranging the bottom beam on the bottom surface of the curved pool bottom plate; simulating the welding process; using hoisting machinery to flip the inverted-lock module unit; using hoisting machinery to hoist the single inverted-lock module unit onto the column; repeating the above steps.

[0008] The aforementioned thickener inverted method construction method uses the inverted method to assemble thickener modules. Although it optimizes the welding and hoisting process, the application of BIM is limited to assembly simulation and hoisting planning. It does not extend to dynamic control and real-time correction during the construction process, nor does it propose effective solutions for core quality issues such as self-waterproofing of the pool structure and temperature crack control. The modular division is not dynamically adjusted in combination with the structural stress characteristics and construction accuracy requirements.

[0009] In addition, existing technologies generally lack a closed-loop control mechanism from design refinement, layout and positioning, on-site management and acceptance quantification. The integration of parametric design tools and BIM models is insufficient, making it impossible to achieve accurate transmission and efficient reuse of construction data, resulting in construction efficiency, quality and cost control failing to achieve ideal results.

[0010] In summary, existing construction methods and related technologies still cannot systematically solve the problems of difficulty in ensuring accuracy, controlling cracks, unifying instructions, and quantifying acceptance in the construction of ultra-large thickeners. There is an urgent need for an integrated, refined, and full-process construction control method to meet the construction needs of ultra-large thickeners. Summary of the Invention

[0011] To address the challenges of ensuring precision, controlling cracks, standardizing handover procedures, and quantifying acceptance during the construction of ultra-large thickener tanks, this invention proposes a high-precision layout and positioning construction control method and system for large thickeners, enabling refined management of tank structure construction deviations ≤0.1mm.

[0012] The technical solution adopted in this invention is as follows: A high-precision layout and positioning construction control method for a large thickener includes: Construct a building information model of the dense machine pool and associate it with the relevant technical information of the corresponding components; Based on the building information model, layout point data is generated through parametric programming, thereby generating a detailed design scheme and a pouring plan for the formwork system. On-site construction management is carried out by combining visualization technology, and acceptance is achieved by comparing the measured data with the building information model after construction is completed.

[0013] Furthermore, the construction of the building information model of the thickening tank includes: extracting the inclined plate structure features and radial compartment features of the thickening tank based on its geometric dimensions, material properties and process parameters, and then constructing the building information model of the thickening tank.

[0014] Furthermore, the associated technical information of the corresponding components includes: establishing a QR code identification system for the construction site, associating the building information model of the thickening tank with the related technical information of the corresponding components, wherein the related technical information of the corresponding components includes the technical parameters, construction plan and quality acceptance standards of the corresponding components.

[0015] Furthermore, the generation of layout point data through parametric programming includes: automatically generating the coordinates of layout points for the entire pool body by extracting the spatial curved surface data of the inclined plate of the pool body from the building information model, and simultaneously outputting a control point data file containing coordinate information and design elevation, as well as a two-dimensional layout drawing.

[0016] Furthermore, the parametric programming generates layout points according to the principle of radial division, and the density of layout points must meet the requirements for accuracy control during pool construction.

[0017] Furthermore, the generation of the formwork support system detailed design scheme and pouring planning scheme includes: importing the layout point data into the formwork support model, optimizing the support structure layout using collision detection technology to form the generation of the formwork support system detailed design scheme; adopting a radial compartmentalized symmetrical loading pouring strategy, clarifying the layered pouring sequence, and forming the pouring planning scheme.

[0018] Furthermore, during the process of generating the detailed design scheme of the formwork system, the deformation of the formwork under construction load is verified to meet the construction requirements by simulating the concrete pouring process.

[0019] Furthermore, the on-site construction management using visualization technology includes: setting up identification codes for related component information at key locations on the construction site, allowing construction personnel to obtain 3D models, installation videos, and acceptance standards for the corresponding parts by scanning the codes; uploading on-site measurement data to the building information model management platform in real time, and automatically generating deviation analysis charts through the management platform to guide immediate corrections during the construction process.

[0020] Furthermore, the acceptance process after construction is completed involves comparing measured data with the building information model, including: acquiring measured data through automated measurement equipment, comparing it with theoretical data from the building information model, and generating a deviation analysis report to determine whether the construction quality meets the standards.

[0021] A high-precision layout and positioning construction control system for a large thickener includes: The model building and information integration module is configured to build a building information model of the dense machine pool and associate it with the relevant technical information of the corresponding components; The layout point generation and scheme generation module is configured to generate layout point data based on the building information model through parametric programming, and then generate a detailed design scheme and a pouring plan scheme for the formwork system. The dynamic control and comparison acceptance module is configured to combine visualization technology for on-site construction control, and to achieve acceptance by comparing the measured data with the building information model after construction is completed.

[0022] The beneficial effects of this invention are as follows: This invention, through the deep integration of BIM and parametric programming, constructs a closed-loop construction control system for the entire process. It not only solves the core technical problems of ultra-large thickener construction, but also achieves multiple breakthroughs in construction accuracy, quality reliability, operation efficiency, cost control and industry technology upgrading, as detailed below.

[0023] 1. This invention addresses the unique structures of ultra-large thickeners, such as inclined plate structures, large-diameter tanks, and radial compartments. Through parametric programming, it automatically generates high-density layout points. Combined with precise mapping from the BIM model and comparison with measured data, it achieves refined control over tank surface deviations, roundness, and inclined plate angles. Compared to CN116702258A, this invention elevates construction precision to a higher level through customized layout point generation and detailed formwork system design, fully meeting the stringent requirements of high-precision equipment operation for structural dimensions. Compared to CN117828789A, this invention achieves immediate correction of construction deviations through real-time data uploading and deviation heatmap generation, ensuring controllable precision throughout the entire process.

[0024] 2. This invention employs a compartmentalized symmetrical loading and pouring strategy, combined with BIM-based pre-simulation of the pouring process, effectively balancing construction loads and temperature stresses. This eliminates temperature cracks and cold joints at their source, significantly improving the structure's self-waterproofing performance and corrosion resistance. Compared to CN116702258A and CN117828789A, this invention, through deep adaptation of the construction plan to structural characteristics, achieves a significant increase in the first-time pass rate of the full-water test, while extending equipment lifespan and reducing subsequent maintenance costs.

[0025] 3. This invention replaces traditional manual calculations with parametric programming, automatically generating layout data and construction drawings. Combined with visualization technology for information sharing, it significantly reduces human error and communication costs. Compared to CN116702258A and CN117828789A, the QR code identification system and mobile BIM model of this invention enable rapid and unified transmission of technical information, ensuring that all parties involved in the construction have a consistent understanding of the key construction points. At the same time, parametric layout and detailed design of formwork significantly shorten the preliminary preparation time, and dynamic management during the construction process reduces rework and waiting time, resulting in an overall increase in work efficiency by several times.

[0026] 4. This invention reduces material waste through collision detection in the BIM model and optimization of the formwork system. Simultaneously, high-precision construction lowers rework rates and subsequent maintenance costs. Compared to CN116702258A and CN117828789A, this invention achieves cost optimization throughout the entire design, construction, and acceptance cycle: optimized formwork design reduces material consumption, segmented pouring reduces machinery downtime, and precise layout avoids material loss and delays due to deviations, resulting in significantly reduced overall costs and outstanding economic benefits.

[0027] 5. This invention establishes a reusable parametric construction database, containing full-process information such as model data, layout parameters, construction plans, and acceptance standards. Similar projects can directly access this database, overcoming the limitations of fragmented and unreusable data in existing technologies. Compared to CN116702258A and CN117828789A, this invention, through data accumulation and reuse, can promote the standardization and digitalization of large-scale thickener construction. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an existing thickener model.

[0029] Figure 2 This is a flowchart of the high-precision layout and positioning construction control method for a large thickener according to Embodiment 1 of the present invention.

[0030] Figure 3 This is a schematic diagram of the planar coordinate system formed by the projection of spatial points in Embodiment 2 of the present invention.

[0031] Figure 4 This is a schematic diagram of a planar coordinate system with three-dimensional coordinates marked in Embodiment 2 of the present invention. Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments are now described. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] Example 1 like Figure 2 As shown in the figure, this embodiment provides a high-precision layout and positioning construction control method for a large thickener, including: Construct a building information model of the dense machine pool and associate it with the relevant technical information of the corresponding components; Based on the building information model, layout point data is generated through parametric programming, thereby generating a detailed design scheme and a pouring plan for the formwork system. On-site construction management is carried out by combining visualization technology, and acceptance is achieved by comparing the measured data with the building information model after construction is completed.

[0034] It should be noted that this method combines digital modeling, parametric design, and on-site construction management, realizing closed-loop management of the entire process from design to acceptance. This effectively improves the accuracy and efficiency of large thickener construction, reduces deviations and rework during construction, and ensures the stability of project quality.

[0035] Preferably, constructing a building information model of the thickening tank includes: extracting the inclined plate structure features and radial compartment features of the thickening tank based on its geometric dimensions, material properties, and process parameters, and then constructing a building information model of the thickening tank.

[0036] Specifically, the design documents of the thickener tank are first systematically analyzed to clarify its overall geometric outline, the dimensions and specifications of each part, the types of materials used, and related process requirements. Then, the morphology of the inclined plate structure of the tank is carefully analyzed, including the inclination direction of the inclined plates, the connection method, and other characteristics. At the same time, the division method and distribution pattern of the radial compartments are identified. Finally, professional 3D modeling software is used to integrate the geometric dimensions, material properties, process parameters, and structural features obtained above into the model building process, gradually building a complete and accurate building information model of the thickener tank.

[0037] It should be noted that by extracting key structural features and integrating them into the model construction, the established building information model can realistically and comprehensively reflect the actual structural condition of the pool, providing accurate and reliable basic data support for subsequent steps such as layout point generation and scheme design, and avoiding construction deviations caused by discrepancies between the model and the actual structure.

[0038] Preferably, associating the relevant technical information of the corresponding components includes: establishing a construction site identification code system, associating the building information model of the thickening tank with the relevant technical information of the corresponding components, wherein the relevant technical information of the corresponding components includes the technical parameters, construction plan and quality acceptance standards of the corresponding components.

[0039] Specifically, a unique identification code is assigned to each component, and this identification code is bound to information such as the corresponding component's technical parameters, detailed construction process, and specific quality acceptance requirements in the building information model backend. Then, according to the actual situation of the construction site, the identification code is affixed or placed in key positions of the corresponding component to ensure that construction personnel can easily obtain the identification code during the operation.

[0040] It should be noted that the establishment of the identification code system has enabled the precise association between the building information model and the on-site components. Construction personnel can quickly query the relevant technical information of the components, ensuring that all parties involved in the construction have a consistent understanding of the construction requirements, reducing information discrepancies during the technical briefing process, and improving the efficiency of construction communication and the accuracy of operations.

[0041] Preferably, the layout point data is generated through parametric programming, including: automatically generating the coordinates of the layout points of the entire pool by extracting the spatial curved surface data of the inclined plate of the pool body in the building information model, and outputting control point data files and two-dimensional layout drawings containing coordinate information and design elevations.

[0042] Specifically, the data analysis function of the parametric programming tool is used to accurately extract the spatial surface geometry data of the inclined plate of the pool from the building information model; by writing the preset programming logic, the program can automatically calculate and generate the coordinates of the layout points covering the entire pool based on the extracted surface data; after generating the coordinate data, the program automatically organizes the data to form a control point data file containing the coordinate information of each layout point and the corresponding design elevation, and generates two-dimensional layout drawings that can be directly used for on-site construction in accordance with the construction specifications.

[0043] It should be noted that the automatic generation of layout point data and related files through parametric programming replaces the traditional manual calculation method. This not only greatly improves the efficiency of layout point generation but also avoids the errors that may occur during manual calculation, ensuring the accuracy of the layout point coordinates and providing a reliable positioning basis for subsequent construction.

[0044] Preferably, parametric programming generates layout points according to the principle of radial equal division, and the density of layout points must meet the requirements for controlling the construction accuracy of the pool. Specifically, during the parametric programming process, a generation rule of radially uniform equal division is set to ensure that the layout points are evenly distributed in the radial direction of the pool. At the same time, based on the overall requirements for the construction accuracy of the pool, and combined with the construction difficulty and importance of different parts, the density of layout points is flexibly adjusted. For parts with high accuracy requirements and greater construction difficulty, the number of layout points is appropriately increased to ensure that the density of layout points can fully meet the needs of construction accuracy control.

[0045] It should be noted that generating layout points according to the principle of radial equal division ensures the uniformity of layout points in the radial direction of the pool body, avoiding the problem of inaccurate positioning caused by sparse layout points in some areas; while adjusting the density of layout points according to the construction accuracy requirements can not only meet the high-precision construction requirements of key parts, but also avoid unnecessary waste of resources, thus achieving a balance between accurate positioning and construction efficiency.

[0046] Preferably, generating a detailed design scheme and a pouring plan scheme for the formwork system includes: importing the layout point data into the formwork model, optimizing the layout of the support structure using collision detection technology to form a detailed design scheme for the formwork system; and adopting a radially compartmented symmetrical loading pouring strategy to clarify the layered pouring sequence and form a pouring plan scheme.

[0047] Specifically, the previously generated layout point data is completely imported into the formwork model. With the help of the collision detection function of professional software, the arrangement of the support components of the formwork is comprehensively inspected to identify potential problems such as component collisions and unreasonable arrangements. Based on the inspection results, the position, quantity, and connection method of the support components are adjusted to form an optimized formwork system detailed design scheme. When planning the pouring scheme, the pool is divided into multiple symmetrical pouring units using a radial compartmentalization method. The pouring range of each unit is determined, and the symmetrical loading pouring method and the specific sequence of layered pouring are clearly defined to ensure that the pouring process is carried out in an orderly manner.

[0048] It should be noted that optimizing the formwork arrangement using collision detection technology effectively avoids mutual interference between supporting structures, improving the stability and safety of the formwork system. The radial compartmentalized symmetrical loading pouring strategy can balance the load distribution during the pouring process, reduce structural deformation, and the clear layered pouring sequence helps to eliminate potential quality defects during construction, ensuring the quality of concrete pouring.

[0049] Preferably, during the process of generating the detailed design scheme of the formwork system, the deformation of the formwork under construction loads is verified to meet the construction requirements by simulating the concrete pouring process. Specifically, after the preliminary detailed design scheme of the formwork system is formed, a simulation scenario of the concrete pouring process is constructed using professional simulation software. The load data that may be generated during construction is input into the simulation system to simulate the load changes borne by the formwork during concrete pouring and to monitor the deformation data of various parts of the formwork in real time. Based on the monitoring results, it is determined whether the deformation of the formwork is within the allowable range of construction requirements. If the deformation exceeds the requirements, the design parameters of the formwork are adjusted until the deformation meets the construction requirements.

[0050] It should be noted that by simulating the deformation of the formwork during the concrete pouring process in advance, weak links in the formwork system design can be identified in a timely manner, and targeted optimizations and adjustments can be made to avoid structural quality problems and safety hazards caused by excessive deformation of the formwork during actual construction, thus ensuring the smooth progress of the construction process.

[0051] Preferably, on-site construction management is carried out in conjunction with visualization technology, including: setting up identification codes for related component information at key locations on the construction site, and construction personnel can obtain the 3D model, installation video and acceptance standards of the corresponding parts by scanning the codes; uploading on-site measurement data to the building information model management platform in real time, and automatically generating deviation analysis charts through the management platform to guide real-time correction during the construction process.

[0052] Specifically, at key locations such as critical nodes of components and complex construction areas on the construction site, identification codes associated with corresponding component information are reasonably set. Before or during work, construction personnel can quickly obtain a 3D model of the location, detailed installation operation videos, and clear acceptance standards by scanning the identification codes with a mobile terminal. At the same time, using on-site measurement equipment connected to the management platform, the measurement data collected during construction is uploaded to the building information model management platform in real time. After receiving the data, the platform automatically analyzes and processes it, generating intuitive deviation analysis charts. Based on the deviations shown in the charts, construction management personnel guide construction personnel to take timely corrective measures.

[0053] It should be noted that the application of visualization technology makes technical briefings more intuitive and easier to understand, effectively reducing the difficulty for construction personnel to understand the construction requirements of complex structures and improving the accuracy of operations; while the real-time uploading and deviation analysis of on-site measurement data enables dynamic control of the construction process, which can promptly detect and correct construction deviations, avoid quality problems caused by the accumulation of deviations, and ensure that the construction quality is always under control.

[0054] Preferably, after construction is completed, acceptance is achieved by comparing measured data with the building information model, including: obtaining measured data through automated measurement equipment, comparing it with theoretical data from the building information model, and generating a deviation analysis report to determine whether the construction quality meets the standards.

[0055] Specifically, after construction is completed, automated measuring equipment is used to comprehensively measure all key parts of the pool, collecting measured data including geometric dimensions, position coordinates, and structural angles. The collected measured data is imported into the data processing system and compared one by one with the corresponding theoretical data in the building information model to calculate the deviation value of each data. Based on the magnitude and distribution of the deviation value, a detailed deviation analysis report is generated to clarify the construction deviation of each part. Then, based on relevant quality standards, it is determined whether the construction quality meets the qualification requirements.

[0056] It should be noted that using automated measurement equipment to acquire measured data not only improves the efficiency of data collection but also ensures the accuracy of the measured data. By comparing the measured data with theoretical data from the Building Information Modeling (BIM) system, a deviation analysis report is generated, making the acceptance results more objective and quantitative. This avoids the subjectivity and ambiguity of traditional acceptance methods, accurately determines whether the construction quality meets the standards, and provides a reliable basis for project acceptance.

[0057] Accordingly, this embodiment also provides a high-precision layout and positioning construction control system for a large thickener, including a model building and information integration module, a layout point generation and scheme generation module, and a dynamic control and comparison acceptance module. The model building and information integration module is configured to build a building information model of the thickener tank and associate it with relevant technical information of the corresponding components. The layout point generation and scheme generation module is configured to generate layout point data based on the building information model through parametric programming, and then generate a detailed design scheme for the formwork system and a pouring plan scheme. The dynamic control and comparison acceptance module is configured to combine visualization technology for on-site construction control, and achieve acceptance by comparing the measured data with the building information model after construction is completed.

[0058] Specifically, the model building and information integration module receives relevant data from the design documents, uses 3D modeling algorithms to construct a building information model of the dense machine pool, and establishes a data association mechanism to bind the technical parameters and construction plans of the components to the corresponding components in the model. The layout point generation and scheme generation module calls the model data in the model building and information integration module, extracts key structural data through built-in parametric programming algorithms, automatically generates layout point data, and then generates a detailed design scheme for the formwork system and a pouring plan based on the layout point data and preset design rules. The dynamic control and comparison acceptance module connects to the on-site identification code reading device and measuring device to obtain information query records and measurement data from the construction site, realizes visualized technical briefing and real-time uploading and analysis of on-site data, receives measured data after construction, compares and analyzes it with the theoretical data of the model, and completes the acceptance judgment.

[0059] It should be noted that the system, through the collaborative work of three modules, digitizes and integrates the management of all key aspects of the construction of large thickeners, achieving seamless connection between design information, construction plans, on-site control and acceptance processes. This effectively improves the efficiency and accuracy of the construction process control, providing strong system support for the high-precision construction of large thickeners.

[0060] Example 2 This embodiment provides a high-precision layout and positioning construction control method for a large thickener, including the following steps: Step 1: High-precision BIM model construction and information integration; Step 2: Generation of parameterized lofting points based on Dynamo; Step 3: Detailed design and pre-simulation of the formwork system; Step 4: Control of symmetrical loading and pouring in sections; Step 5: Visual technology briefing and on-site dynamic management; Step 6: High-precision acceptance and data analysis.

[0061] Specifically, the method of this embodiment can be implemented using the following steps.

[0062] Step 1: High-precision BIM model construction and information integration Establish a detailed BIM model of the thickener pool, including geometric dimensions, material properties, and process parameters, with an accuracy level ≥ LOD400. The model must accurately represent the 400mm thick inclined plate structure, the φ42m diameter pool, and the 15° radial compartment features. Generate a QR code identification system for the construction site, linking the technical parameters, construction plans, and quality acceptance standards of the corresponding components in the model.

[0063] Step 2: Generation of parameterized lofting points based on Dynamo Extract the spatial surface data of the inclined plate of the pool from the BIM model; use the Dynamo visual programming program to automatically generate the coordinates of the finely laid-out points of the entire pool (density ≥ 5 points / m²) according to the principle of radial 15° equal division. Figure 3 and Figure 4 As shown, it automatically outputs a database of control points with three-dimensional coordinates (X,Y,Z) and design elevations, and generates two-dimensional layout CAD drawings that can directly guide construction.

[0064] Step 3: Detailed design and pre-simulation of the formwork system Import the layout point data into the BIM model of the formwork support for parametric detailed design; optimize the arrangement of uprights using the BIM collision detection function to ensure the stability of the 400mm thick inclined plate formwork support system; simulate the concrete pouring process to verify that the deformation of the formwork support under asymmetrical load is ≤2mm.

[0065] Step 4: Control of symmetrical loading and pouring in sections A radial 15° compartmentalization + symmetrical loading pouring strategy was adopted to divide the pool into 24 symmetrical pouring units along the perimeter. Each unit adopted a trapezoidal layered pouring method of bottom plate → inclined plate → pool wall, with each layer thickness ≤500mm. The time difference between adjacent pouring units was ≤ the initial setting time of concrete. The pouring sequence was optimized through BIM4D construction simulation to completely eliminate cold joints.

[0066] Step 5: Visualization technology briefing and on-site dynamic management QR codes for components are posted at key locations on site, allowing construction workers to scan the codes to access the corresponding 3D model, installation video, and acceptance standards. Real-time handover is conducted using mobile BIM models to ensure consistent understanding of the construction of special structures such as 400mm thick inclined slabs and φ42m large diameter slabs. On-site measurement data is uploaded to the BIM platform in real time, automatically generating actual deviation heatmaps to guide immediate corrections.

[0067] Step 6: High-precision acceptance and data analysis After construction, the total station was used to conduct on-site measurements based on the control points generated by Dynamo. The measurement data was automatically compared with the theoretical coordinates of the BIM model to generate a deviation analysis report. The acceptance criteria can be set as follows: construction deviation of the pool surface ≤ 0.1mm, roundness error ≤ 3mm, and slope angle error ≤ 0.05°.

[0068] Example 3 This embodiment is based on embodiment 1: This embodiment provides a computer device, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the high-precision layout and positioning construction control method for a large-scale thickener as described in Embodiment 1. The computer program can be in the form of source code, object code, executable file, or some intermediate form.

[0069] Example 4 This embodiment is based on embodiment 1: This embodiment provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the high-precision layout and positioning construction control method for a large-scale thickener as described in Embodiment 1. The computer program can be in the form of source code, object code, executable file, or some intermediate form. The storage medium includes any entity or device capable of carrying computer program code, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0070] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

[0071] It should be noted that, for the sake of simplicity, the foregoing method embodiments are described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

Claims

1. A large thickener high-precision lofting positioning construction control method, characterized in that, The application relates to a construction information model of a thickener pool body and related technical information of corresponding components. Based on the construction information model, lofting point data is generated through parameterized programming, and a formwork system deepening design scheme and a pouring planning scheme are generated. After construction is completed, acceptance is realized by comparing measured data with the construction information model. The construction information model of the thickener pool body is constructed based on geometric dimensions, material properties and process parameters of the thickener pool body, features of an inclined plate structure and features of radial partitioning of the thickener pool body are extracted, and then the construction information model of the thickener pool body is constructed.

2. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, The related technical information of the corresponding components includes technical parameters, construction schemes and quality acceptance standards of the corresponding components.

3. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, The parameterized programming generates lofting points according to the principle of radial equal division, and the lofting point density needs to meet the construction precision control requirements of the pool body.

4. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, The formwork system deepening design scheme and the pouring planning scheme are generated by importing the lofting point data into a formwork support model and optimizing the arrangement of the support structure by using collision detection technology to form the formwork system deepening design scheme, and by using a radial partitioning symmetrical loading pouring strategy to clearly define the layer pouring sequence and form the pouring planning scheme.

5. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, During the generation of the formwork system deepening design scheme, the deformation amount of the formwork support under the action of construction load is verified by simulating the concrete pouring process to determine whether the deformation amount meets the construction requirements.

6. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, The construction site is controlled by combining the visualization technology, including setting identification codes of associated components at key positions of the construction site, and construction personnel obtaining three-dimensional models, installation videos and acceptance standards of corresponding parts by scanning the codes, uploading real-time measurement data to a management platform of the construction information model, automatically generating deviation analysis charts by the management platform to guide immediate deviation correction in the construction process.

7. The high-precision lofting positioning construction control method for a large thickener according to claim 6, characterized in that, After construction is completed, acceptance is realized by comparing measured data with the construction information model.

8. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, The model construction and information integration module is configured to construct the construction information model of the thickener pool body and associate the related technical information of the corresponding components.

9. The high-precision lofting positioning construction control method for a large thickener according to claim 1, characterized in that, The lofting point generation and scheme generation module is configured to generate lofting point data through parameterized programming based on the construction information model, and then generate a formwork system deepening design scheme and a pouring planning scheme.

10. A large thickener high-precision lofting positioning construction control system, characterized in that, The dynamic control and comparison and acceptance module is configured to control construction on site by combining the visualization technology, and realize acceptance by comparing measured data with the construction information model after construction is completed. ​ ​ ​

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