High-rise building special-shaped cantilever structure construction method based on BIM + 3D printing technology

Abstract

The invention relates to the technical field of building engineering, and discloses a high-rise building special-shaped cantilever structure construction method based on a BIM + 3D printing technology, and the method comprises the steps: building a parameterized BIM model, inputting a radian equation, a size and a reinforcement arrangement rule of a cantilever structure, and automatically generating a three-dimensional model; simulating formwork, worker operation space, tower crane path conflict, pouring sequence mixing and concrete pumping pipeline arrangement links, and identifying mechanical collision and process conflict; adjusting the component blocks, the steel bar avoiding distance and the construction sequence according to the simulation result; the model proportion and materials of all blocks are stipulated through the 3D printing technology, printing is conducted according to a BIM block scheme, and the positions of hoisting point positions, prestressed ducts and grouting openings are marked; simulating a high-altitude construction process, and testing splicing gaps and node connection reliability; splicing the plurality of blocks, recording problems occurring in the splicing process, and generating an optimization list; the problem is fed back to the BIM model, and design parameters and construction procedures are iteratively corrected; and forming a construction scheme and implementing on site.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method for irregular cantilever structures of high-rise buildings based on BIM+3D printing technology. Background Technology

[0002] Currently, with the increasing demand for architectural aesthetics, the application of high-rise concrete irregular cantilever structures is growing. However, their construction faces many challenges. Among these challenges are: high cost of custom-made multi-curved surface formwork; traditional formwork construction for irregular cantilever structures has limitations, requiring the customization of complex formwork, which is costly and cannot utilize the internal support system of multi-curved irregular structures, making construction difficult and prone to formwork deformation or concrete pouring defects; low precision and difficulty in controlling errors in high-altitude construction; large errors in manual layout, making it difficult to achieve precise positioning of complex curved surfaces, and the cumulative errors in high-altitude cantilever structures can easily lead to structural instability; and numerous interferences in the construction of complex structures; the complex shapes of irregular structures make it difficult for traditional construction methods to accurately express the design intent, resulting in numerous interferences between various structures and construction machinery, requiring multiple pouring and curing processes, long construction periods, and poor finishing results. Summary of the Invention

[0003] This application provides a construction method for irregular cantilever structures in high-rise buildings based on BIM+3D printing technology, in order to solve the problems of poor positioning accuracy and complicated construction steps in the construction of irregular cantilever structures.

[0004] To solve the above-mentioned technical problems, this application provides a construction method for irregular cantilever structures of high-rise buildings based on BIM+3D printing technology, including: S1, using Revit+Rhino to establish a parametric BIM model, inputting the arc equation, dimensions, and reinforcement arrangement rules of the cantilever structure, and automatically generating a three-dimensional model; S2. Virtual Construction Simulation: Navisworks is used to simulate formwork, worker operating space, tower crane path conflicts, pouring sequence, concrete pumping pipeline layout, identify mechanical collisions and process conflicts, and adjust component segmentation, rebar avoidance spacing, and construction sequence based on simulation results. S3. Using 3D printing technology, specify the model scale and materials for each block, print the components according to the BIM block plan, mark the hoisting points, prestressed ducts, and grouting port locations, and form a 3D printed micro-scale model; simulate the high-altitude construction process and test the assembly gap and node connection reliability. S4. Physical Assembly Verification: Assemble multiple blocks, record issues such as interference, positioning deviation, and insufficient operating space that occur during the assembly process, and generate an optimization list; feed the issues back to the BIM model and iteratively correct the design parameters and construction procedures. S5. Develop a construction plan and implement it on site.

[0005] In some embodiments of this application, in step S1, during the design phase, BIM technology is used to create an accurate three-dimensional model to simulate a high-rise irregular cantilever structure, identify potential design problems, predict conflicts between different disciplines through collision detection, and simulate the printing process in the BIM environment to check for collisions between the print head and the structure and supports, optimize the design of temporary supports, and ensure the stability of the structure and the continuity of printing during the printing process.

[0006] In some embodiments of this application, the component segmentation, rebar clearance spacing, and construction sequence in S2 are incorporated into the 3D printed micro-scale model, and problems that occur during solid assembly are marked.

[0007] In some embodiments of this application, in step S3, 3D printing technology is used to generate the printing path of the segmented model. The printing speed, layer thickness, and angle are adjusted in combination with the physical properties of the printing material to reduce printing time and material waste, and to ensure printing accuracy and structural strength.

[0008] In some embodiments of this application, the printing ratio in S3 is 1:20 to 1:50, and the materials include PLA, TPU, ABS and high-precision photosensitive resin, wherein the layer thickness of the high-precision photosensitive resin is 0.05 mm.

[0009] In some embodiments of this application, after printing is completed in step S4, each segment is inspected for quality and then pre-assembled to verify whether its size and shape meet the design requirements. Precise positioning and connection technology is used to splice the segmented structure in the simulated site to ensure the accuracy and strength of the overall structure. At the same time, the real-time update of the BIM model is used to monitor the entire simulation process and adjust and optimize the construction plan in a timely manner.

[0010] In some embodiments of this application, it also includes: establishing a collaborative work platform, utilizing the collaborative functions of BIM to enable construction teams, design teams, and supervisors to share construction information, communicate and adjust plans in a timely manner, and ensure the accurate and error-free construction of irregular structures.

[0011] In some embodiments of this application, the system further includes: installing sensors in an array at the construction site to monitor multiple parameters of the structure, transmitting the data to a cloud platform in real time, linking with the BIM model, and automatically triggering an early warning when the parameter values ​​exceed a preset threshold, providing timely information for construction decisions.

[0012] Compared with the prior art, the present invention has the following features and beneficial effects: This invention employs a dual-dimensional verification mechanism: Through dual verification via BIM virtual simulation and 3D-printed micro-model assembly, construction conflicts and errors in complex cantilever structures are identified and resolved in advance; dynamic closed-loop optimization: based on the micro-model assembly results fed back to the BIM model, design parameters and construction procedures are iteratively corrected to form a final, feasible construction plan; template-free construction of hollow structures: combining 3D printing technology to directly form curved hollow cavities, avoiding the difficulties of traditional formwork support; collaborative pre-simulation of virtual and real models: through BIM virtual process simulation and 3D-printed micro-model assembly, a closed-loop optimization process is formed to solve construction blind spots in complex cantilever structures; dynamic error feedback mechanism: based on the micro-model assembly results, BIM model parameters are corrected in reverse, enabling iterative upgrades of the construction plan and achieving dynamic optimization of the entire construction process; early identification and elimination of complex node conflicts and errors; one-time molding of high-altitude curved hollow structures reduces rework rates, and is particularly suitable for the rapid and precise construction of irregular cantilever structures with frequent curvature changes and complex shapes. Its widespread use is expected to produce good results. Attached Figure Description

[0013] Figure 1 This is a flowchart of the virtual-real dual-mode verification process according to an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the BIM model according to an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of another BIM model according to an embodiment of the present invention. Detailed Implementation

[0014] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0015] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0016] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0018] like Figure 1-3 As shown, according to some embodiments of this application, a construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology includes: S1, using Revit+Rhino to establish a parametric BIM model, inputting the arc equation, dimensions, and reinforcement arrangement rules of the cantilever structure, and automatically generating a three-dimensional model; S2. Virtual Construction Simulation: Navisworks is used to simulate formwork, worker operating space, tower crane path conflicts, pouring sequence, concrete pumping pipeline layout, identify mechanical collisions and process conflicts, and adjust component segmentation, rebar avoidance spacing, and construction sequence based on simulation results. S3. Using 3D printing technology, specify the model scale and materials for each block, print the components according to the BIM block plan, mark the hoisting points, prestressed ducts, and grouting port locations, and form a 3D printed micro-scale model; simulate the high-altitude construction process and test the assembly gap and node connection reliability. S4. Physical Assembly Verification: Assemble multiple blocks, record issues such as interference, positioning deviation, and insufficient operating space that occur during the assembly process, and generate an optimization list; feed the issues back to the BIM model and iteratively correct the design parameters and construction procedures. S5. Develop a construction plan and implement it on site.

[0019] According to some embodiments of this application, in S1, during the design phase, BIM technology is used to create an accurate three-dimensional model to simulate a high-rise irregular cantilever structure, identify potential design problems, predict conflicts between different disciplines through collision detection, and simulate the printing process in the BIM environment to check for collisions between the print head and the structure and supports, optimize the design of temporary supports, and ensure the stability of the structure and the continuity of printing during the printing process.

[0020] It should be noted that structural analysis software can be integrated to perform stress analysis, assess the stability of the cantilever section, and adjust the design based on the analysis results to ensure that construction safety and structural performance requirements are met, while also adapting to the material properties of 3D printing.

[0021] According to some embodiments of this application, the component segmentation, rebar clearance spacing, and construction sequence in S2 are incorporated into the 3D printed micro-scale model, and problems that occur during solid assembly are marked.

[0022] It should be noted that before construction, 3D printing equipment is used to print according to the preset template design. Due to the accuracy of the template, it can be used as a reference to reduce errors during concrete pouring and improve the structural quality.

[0023] According to some embodiments of this application, in S3, 3D printing technology is used to generate the printing path of the segmented model. Combined with the physical properties of the printing material, the printing speed, layer thickness and angle are adjusted to reduce printing time and material waste, and to ensure printing accuracy and structural strength.

[0024] According to some embodiments of this application, the printing ratio in S3 is 1:20 to 1:50, and the materials include PLA, TPU, ABS and high-precision photosensitive resin. The layer thickness of the high-precision photosensitive resin is 0.05mm. 3D printing technology can be used to directly print irregularly shaped components based on the BIM model, avoiding the complexity and material waste of traditional template making.

[0025] According to some embodiments of this application, in step S4, after printing is completed, each segment is inspected for quality and then pre-assembled to verify whether its size and shape meet the design requirements. Precise positioning and connection technology is used to splice the segmented structure in the simulated site to ensure the accuracy and strength of the overall structure. At the same time, the real-time update of the BIM model is used to monitor the entire simulation process and adjust and optimize the construction plan in a timely manner.

[0026] According to some embodiments of this application, it also includes: establishing a collaborative work platform, utilizing the collaborative functions of BIM to enable the construction team, design team and supervision party to share construction information, communicate and adjust plans in a timely manner, and ensure the accurate and error-free construction of irregular structures.

[0027] According to some embodiments of this application, the system further includes: installing sensors in an array at the construction site to monitor multiple parameters of the structure; transmitting the data to a cloud platform in real time; linking with the BIM model; and automatically triggering an early warning when the parameter values ​​exceed a preset threshold, providing timely information for construction decisions.

[0028] It should be noted that data analysis tools are used to analyze the collected real-time data, and the construction plan is dynamically adjusted in conjunction with the BIM model. For example, the construction sequence can be optimized based on the structural stress distribution, and 3D printing parameters can be adjusted based on deformation to ensure structural safety and construction quality. At the same time, a visual interface can be developed to allow the project team to intuitively view the BIM model and real-time monitoring data. Through an interactive decision support system, the team can quickly respond to early warnings and adjust the construction plan in a timely manner to ensure the precise construction and optimization of irregular cantilever structures.

[0029] According to some embodiments of this application, it is necessary to construct the irregular cantilever structure on the facade of each floor of a high-rise building. This requires ensuring the positioning accuracy of the irregular cantilever structure at corner locations and the accurate installation of the internal support system of the irregular cantilever structure. This aims to reduce construction risks and improve the high-precision moldless forming and high-altitude assembly qualification rate of the irregular cantilever structure. This method achieves dynamic optimization of the entire construction process through dual verification using BIM virtual simulation and 3D-printed micro-model physical assembly; early identification and elimination of complex node conflicts and errors; one-time forming of the high-altitude curved hollow structure, reducing rework rates; proactive optimization during the pre-construction phase, forming a closed-loop feedback loop; and multi-curvature adaptive forming of the 3D-printed micro-model, optimizing the template assembly layout and reducing the impact of human factors.

[0030] In summary, this invention relates to the field of building engineering technology and discloses a construction method for high-rise building irregular cantilever structures based on BIM+3D printing technology. The method includes: establishing a parametric BIM model, inputting the arc equation, dimensions, and reinforcement arrangement rules of the cantilever structure, and automatically generating a three-dimensional model; simulating the formwork, worker operating space, tower crane path conflicts, pouring sequence, and concrete pumping pipeline layout, identifying mechanical collisions and process conflicts; adjusting component segmentation, rebar avoidance spacing, and construction sequence based on simulation results; specifying the model scale and materials for each segment using 3D printing technology, printing according to the BIM segmentation scheme, and marking hoisting points, prestressed ducts, and grouting port locations; simulating the high-altitude construction process, testing assembly gaps and node connection reliability; assembling multiple segments, recording problems encountered during assembly, and generating an optimization list; feeding back problems to the BIM model, iteratively correcting design parameters and construction procedures; and forming a construction plan and implementing it on-site.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A construction method for irregular cantilever structures of high-rise buildings based on BIM+3D printing technology, characterized in that, include: S1. Use Revit+Rhino to create a parametric BIM model, input the curvature equation, dimensions, and reinforcement arrangement rules of the cantilever structure, and automatically generate a three-dimensional model; S2. Virtual Construction Simulation: Navisworks is used to simulate formwork, worker operating space, tower crane path conflicts, pouring sequence, concrete pumping pipeline layout, identify mechanical collisions and process conflicts, and adjust component segmentation, rebar avoidance spacing, and construction sequence based on simulation results. S3. Using 3D printing technology, specify the model scale and materials for each block, print the components according to the BIM block plan, mark the hoisting points, prestressed ducts, and grouting port locations, and form a 3D printed micro-scale model; simulate the high-altitude construction process and test the assembly gap and node connection reliability. S4. Physical Assembly Verification: Assemble multiple blocks, record issues such as interference, positioning deviation, and insufficient operating space that occur during the assembly process, and generate an optimization list; feed the issues back to the BIM model and iteratively correct the design parameters and construction procedures. S5. Develop a construction plan and implement it on site.

2. The construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, In S1, during the design phase, BIM technology is used to create an accurate three-dimensional model to simulate high-rise irregular cantilever structures, identify potential design problems, predict conflicts between different disciplines through collision detection, and simulate the printing process in the BIM environment to check for collisions between the print head and the structure and supports, optimize the design of temporary supports, and ensure the stability of the structure and the continuity of printing during the printing process.

3. The construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, The component segmentation, rebar clearance spacing, and construction sequence in S2 are incorporated into the 3D printed micro-scale model, and problems that occur during solid assembly are marked.

4. The construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, In step S3, 3D printing technology is used to generate the printing path of the segmented model. The printing speed, layer thickness and angle are adjusted in combination with the physical properties of the printing material to reduce printing time and material waste, and to ensure printing accuracy and structural strength.

5. The construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, The printing ratio in S3 is 1:20 to 1:50, and the materials include PLA, TPU, ABS and high-precision photosensitive resin, with the high-precision photosensitive resin having a layer thickness of 0.05 mm.

6. The construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, In step S4, after printing is completed, each segment undergoes a quality inspection and is then pre-assembled to verify whether its size and shape meet the design requirements. Precise positioning and connection techniques are used to splice the segmented structures on-site to ensure the accuracy and strength of the overall structure. At the same time, the real-time updates of the BIM model are used to monitor the entire simulation process and adjust and optimize the construction plan in a timely manner.

7. A construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, Also includes: Establish a collaborative work platform and utilize the collaborative functions of BIM to enable construction teams, design teams, and supervisors to share construction information, communicate and adjust plans in a timely manner, and ensure the accurate and error-free construction of irregular structures.

8. A construction method for a high-rise building irregular cantilever structure based on BIM+3D printing technology according to claim 1, characterized in that, Also includes: Sensors are installed in arrays at the construction site to monitor multiple parameters of the structure. The data is transmitted to the cloud platform in real time and linked with the BIM model. When the parameter values ​​exceed the preset threshold, the system automatically triggers an early warning, providing timely information for construction decisions.

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