Bridge steel bar component industrial construction method based on BIM model data driving

Abstract

The invention discloses a BIM model data-driven bridge reinforcement component industrial construction method, which comprises the following steps of S1, establishing a BIM model of a reinforcement component, and optimizing a reinforcement structure; s2, determining a splitting scheme of the reinforcing steel bar component, and splitting the reinforcing steel bar component into a plurality of semi-finished products; s3, processing parameters of the semi-finished product are generated through the BIM model and transmitted to a production line; s4, processing a semi-finished product, collecting key size data of the semi-finished product, and judging whether the processing precision of the semi-finished product is qualified or not; key size data of qualified semi-finished products are stored in a database, and unqualified semi-finished products are adjusted; s5, according to the critical dimension data of the semi-finished product, reconstructing an actual semi-finished product BIM model, performing virtual pre-assembling, and guiding assembling and forming of the reinforcing steel bar component; and key size data of the steel bar components are collected, whether the assembling precision of the steel bar components is qualified or not is judged, and the unqualified steel bar components are adjusted. The construction efficiency of the steel bar component can be improved, and the forming quality of the steel bar component is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar component construction. More specifically, the present invention relates to an industrialized construction method for bridge steel bar components driven by BIM model data. Background Art

[0002] Concrete structures remain the primary form of bridge due to their lower cost. Concrete structures are characterized by diverse shapes, large dimensions, wide cross-sectional variations, and numerous specialized features. These characteristics result in large rebar diameters, heavy weights, and densely packed rebar arrangements. Currently, rebar construction is primarily manual, resulting in challenges such as difficult quality control, low efficiency, and high safety risks.

[0003] To improve the efficiency of rebar construction, some researchers have used steel sections to weld and assemble steel skeletons to form a frame structure. The rebar is welded to the steel skeleton and hoisted together with the steel. This alleviates the difficulties of construction and transportation to some extent and reduces the risks of working at height. However, this is still a manual operation, and the quality of the formation depends on manual experience, without fundamentally liberating the labor force. Other researchers have also split the segmental rebar into steel mesh, which is produced mechanically and then assembled into a single mesh for hoisting. The mesh processing dimensional parameters are manually calculated and input into the equipment, resulting in closed design data and the inability to flow through the design data. Summary of the Invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] To achieve these objectives and other advantages according to the present invention, a method for industrialized construction of bridge steel reinforcement components driven by BIM model data is provided, comprising the following steps: S1. Establish a BIM model of steel components and optimize the steel structure; S2. Determine a splitting plan for the steel bar component and split the steel bar component into multiple semi-finished products; S3. Generate processing parameters for semi-finished products through the BIM model and transmit them to the production line; S4. Process the semi-finished products, collect the key dimension data of the semi-finished products, and determine whether the processing accuracy of the semi-finished products is qualified; save the key dimension data of the qualified semi-finished products into the database, and adjust the unqualified semi-finished products; S5. Reconstruct the actual semi-finished product BIM model based on the key dimension data of the semi-finished product in the database, perform virtual pre-assembly, and guide the assembly and forming of steel bar components; collect the key dimension data of steel bar components, determine whether the assembly accuracy of steel bar components is qualified, and adjust unqualified steel bar components.

[0006] Preferably, in step S1, the bridge concrete structure is first divided into a plurality of standard segments, and the entire steel bar structure in each standard segment is regarded as a steel bar component.

[0007] Preferably, the steel bar structure optimization in step S1 checks whether there is interference between the steel bars in the steel bar component through the BIM model, and adjusts the parts where interference exists.

[0008] Preferably, in step S2, multiple splitting schemes are preliminarily set according to the structure of the steel bar component, and the semi-finished product includes a steel mesh and a steel block; then the final splitting scheme is determined in combination with the original design drawings and the difficulty of industrial forming of the steel mesh or steel block.

[0009] Preferably, in step S3, the processing parameters include the overall size of the semi-finished product and the diameter, length, longitudinal and transverse spacing, bending angle and quantity of the required steel bars.

[0010] Preferably, the key dimensional data in step S4 and step S5 include dimensional data of the main structure of the semi-finished product or the steel bar component, and the dimensional data can be automatically measured by the precision detection system.

[0011] Preferably, the precision detection system is a visual camera or a three-dimensional laser scanner.

[0012] Preferably, in step S4, a threshold is set for the deviation between each key dimension data of the semi-finished product and the corresponding processing parameters, and when the deviation between all key dimensions and the corresponding processing parameters is less than the threshold, it is determined that the processing accuracy of the semi-finished product is qualified.

[0013] Preferably, in step S5, the BIM model after virtual pre-assembly is used as a visual briefing to guide the assembly of steel bar components of the semi-finished product on the assembly frame; the interlayer hook bars and chamfered steel bars are installed on the steel bar components with qualified assembly accuracy to complete the industrialized construction of the steel bar components.

[0014] Preferably, when the deviation between each key dimension data of the steel bar component and the corresponding design value meets the requirements, it is judged that the assembly accuracy of the steel bar component is qualified.

[0015] The present invention has at least the following beneficial effects: The present invention provides an industrialized construction method for bridge steel components driven by BIM model data. First, a BIM model of the steel components is established. The steel structure is optimized using the BIM model to avoid problems such as collisions and interference between steel bars and exceeding protective layers from the design source. Second, the data is directly transmitted to the production line through the BIM model, improving data transmission efficiency and avoiding human errors. Semi-finished products and steel components are then processed and assembled on the production line, improving construction efficiency and reducing labor intensity. Key dimensional data is collected for the resulting semi-finished products and steel components to determine processing and assembly accuracy and ensure the quality of the steel component molding. The steel components can be hoisted as a whole, and their production can be carried out in parallel with processes such as concrete pouring, eliminating critical line time and effectively shortening the project construction period.

[0016] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flow chart of the industrialized construction method for bridge steel bar components driven by BIM model data according to the present invention; Figure 2 Schematic diagram of a BIM model of a segmental beam reinforcement component in one embodiment of the present invention; Figure 3 This is the first splitting solution for the segmental beam reinforcement components in the above embodiment of the present invention; Figure 4 This is the second splitting solution for the segmental beam reinforcement components in the above embodiment of the present invention; Figure 5 This is the third splitting solution for the segmental beam reinforcement components in the above embodiment of the present invention; Figure 6 Schematic diagram of processing parameters of a steel mesh according to the above embodiment of the present invention; Figure 7 Schematic diagram of the steel mesh / block automated production line in the above embodiment of the present invention; Figure 8 This is a schematic structural diagram of the semi-finished product in the above embodiment of the present invention when it is assembled into a steel bar component on an assembly frame; DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0019] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] like Figure 1 As shown, the present invention provides an industrialized construction method for bridge steel bar components based on BIM model data drive, comprising the following steps: S1. Establish a BIM model of steel components and optimize the steel structure; S2. Determine a splitting plan for the steel bar component and split the steel bar component into multiple semi-finished products; S3. Generate processing parameters for semi-finished products through the BIM model and transmit them to the production line; S4. Process the semi-finished products, collect the key dimension data of the semi-finished products, and determine whether the processing accuracy of the semi-finished products is qualified; save the key dimension data of the qualified semi-finished products into the database, and adjust the unqualified semi-finished products; S5. Based on the key dimension data of the semi-finished product in the database, reconstruct the actual BIM model of the semi-finished product, perform virtual pre-assembly, and guide the assembly and forming of the steel bar parts; collect the key dimension data of the steel bar parts, determine whether the assembly accuracy of the steel bar parts is qualified, and adjust the unqualified steel bar parts.

[0021] In this technical solution, a BIM model of the rebar components is first established, followed by structural optimization. This prevents problems such as collisions and interference with the rebar, or problems with the rebar exceeding the protective layer, from the very beginning of the design. Data is then transmitted directly to the production line through the BIM model, improving data transmission efficiency and preventing human error. Semi-finished products are then processed on the production line, improving rebar construction efficiency and reducing worker labor intensity. During processing, key dimensional data is collected to determine whether the semi-finished products meet the required precision. This creates a closed-loop control loop for the production line, ensuring that all semi-finished products meet the required precision before proceeding to the next step. A database is then created for the key dimensional data of the semi-finished products, and this data is used to reconstruct the actual BIM model of the semi-finished products to guide the assembly of the rebar components. During the assembly process, key dimensional data is collected and compared with design parameters until the required precision is met, ensuring the quality of the final product. Using an assembled construction method where the rebar components are hoisted as a whole, the production of the rebar components is carried out in parallel with processes such as concrete pouring, eliminating critical line time and effectively shortening the project construction period.

[0022] In step S1, the concrete structure of the bridge is first divided into a plurality of standard segments, and the overall steel structure in each standard segment is regarded as a steel component. The present invention can be applied to the industrialized construction of steel components of concrete structures such as bridge towers, piers, sinking platforms, segmental beams, and box beams in bridge projects. Tall structures such as bridge towers and piers can be divided into 3m, 4.5m, and 6m standard segments according to their height; the steel structure of the sinking platform is divided into steel components according to factors such as the size of the sinking platform and the on-site construction organization; the segmental beams and box beams can regard single segments as steel components. The following takes the steel components in the segmental beam as an example to specifically illustrate the industrialized construction method of bridge steel components driven by BIM model data. Figure 2 As shown, firstly, the BIM model of the segmental beam reinforcement components is proposed based on the design drawings.

[0023] The steel structure optimization in step S1 uses the BIM model to check whether there is interference between the steel bars in the steel bar components, adjust the parts with interference, and fine-tune the local steel bar spacing in the parts with interference to ensure that the steel bar components can be assembled smoothly in the later stage.

[0024] In step S2, multiple splitting schemes are preliminarily set according to the structure of the steel bar component. The semi-finished product includes steel mesh and steel block. Then, the final splitting scheme is determined based on the original design drawings and the difficulty of industrial forming of the steel mesh or steel block. There are multiple splitting schemes for segmental beam steel bar components. Three of them are given as examples. Scheme 1, such as Figure 3 As shown in the figure, it is divided into 11 meshes of different sizes, 1 steel bar block and hook bars and other post-installed steel bars; Option 2, such as Figure 4As shown, it is divided into 9 meshes of different sizes and 3 steel blocks and hook bars and other post-installed steel bars; Option 3, as shown Figure 5 As shown, it is split into 7 steel blocks and hook bars and other post-installed steel bars.

[0025] In step S3, according to the determined splitting scheme, the parameters required for the automated processing of the semi-finished product are generated through the BIM model. The processing parameters include the overall size of the semi-finished product and the diameter, length, longitudinal and transverse spacing, bending angle and quantity of the required steel bars. Figure 6 The figure shows the processing parameters of a steel mesh after splitting, including the diameters of the transverse and longitudinal bars D1 and D2, the mesh angle A, the transverse steel bar length L, the transverse steel bar spacing L1~L10, the longitudinal steel bar length B, the longitudinal steel bar spacing B0~B11 and other data required for processing the mesh.

[0026] In step S4, the processing parameter data is transmitted to the production line for semi-finished product processing. The production line is an automated production line for steel mesh / blocks, such as Figure 7 As shown, the system comprises an automatic feeding module 1, an automatic docking module 2, an automatic cutting module 3, an automatic distribution module 4, a longitudinal reinforcement distribution module 5, an automatic welding module 6, and an integral bending module 7, which are sequentially arranged. The automatic feeding module 1 includes a stepped feeding mechanism and a horizontal transmission mechanism to separate and transport bundled reinforcement bars one by one. The automatic docking module 2 includes a flash butt welder and a weld bead chip removal mechanism to extend the reinforcement bars and remove weld bead chips. The automatic cutting module 3 is used to cut the reinforcement bars to a fixed length. The automatic distribution module 4 includes a stepped feeding mechanism and a reinforcement positioning structure to automatically distribute the transverse reinforcement bars according to the designed spacing. The longitudinal reinforcement distribution module 5 includes a material separation mechanism and a longitudinal transmission mechanism to transport bundled reinforcement bars one by one and form a reinforcement mesh / block with the transverse reinforcement bars. The automatic welding module 6 welds the longitudinal and transverse reinforcement bars at their intersections to form a whole, and can use automatic spot-finding welding such as resistance welding or carbon dioxide gas shielded welding. The integral bending module 7 includes a clamping mechanism, a bending drive mechanism, etc. to bend the reinforcement mesh into the desired design shape.

[0027] The production line automatically selects rebar of the appropriate diameter and automatically loads it into the automatic loading module 1. The rebar is then connected by the automatic butting module 2 (e.g., flash butt welding, resistance pressure welding, etc.). The automatic cutting module 3 then cuts the rebar to the desired length. The automatic routing module 4 then automatically routes the transverse rebar. Once the transverse rebar is laid, the longitudinal rebar is automatically routed by the longitudinal routing module 5. After the traction mechanism pulls the transverse rebar to the specified distance, the longitudinal routing module 5 arranges the longitudinal rebar. The automatic welding module 6 (e.g., resistance welding, CO2 gas shielded welding, etc.) welds the transverse and longitudinal rebar at their intersections. The traction, longitudinal routing, and welding steps are repeated until the entire flat mesh is formed. Finally, the mesh is bent into the desired shape by the overall bending module 7. During the mesh production process, the spacing of the longitudinal rebars is essentially determined by the travel of the traction mechanism. An encoder is installed to measure the spacing at each traction and provide feedback to the production line for closed-loop control, ensuring the proper spacing of the longitudinal rebars. Key dimensional data of the semi-finished product is then collected to determine if the finished product meets the required machining accuracy.

[0028] The key dimensional data in steps S4 and S5 include the dimensional data of the main structures of the semi-finished product or steel bar component, and these dimensional data can be automatically measured by a precision inspection system, such as the length, width, bend angle, steel bar diameter, and steel bar spacing of the semi-finished product. The precision inspection system is a visual camera or a 3D laser scanner installed at the corresponding location on the production line.

[0029] The specific method for determining whether a semi-finished product's machining accuracy is acceptable is to set a threshold for the deviation between each key dimension of the semi-finished product and the corresponding machining parameters. The semi-finished product's machining accuracy is considered acceptable when the deviation between all key dimensions and the corresponding machining parameters is less than the threshold. The key dimension data of qualified semi-finished products is saved in a database, and unqualified semi-finished products are adjusted to meet the machining accuracy requirements.

[0030] In step S5, based on the key dimension data of the semi-finished product in the database, that is, the data actually measured by the precision detection system, the actual semi-finished product BIM model is reconstructed for virtual pre-assembly; the BIM model after virtual pre-assembly is used as a visual handover to guide the assembly of the steel bar parts of the semi-finished product on the assembly frame, such as Figure 8 As shown; the precision detection system then collects key dimensional data of the steel bar components. When the deviation between each key dimensional data of the steel bar component and the corresponding design value meets the requirements, the steel bar component assembly accuracy is determined to be qualified. For the steel bar components with qualified processing accuracy, interlayer hook bars and chamfered steel bars are installed, completing the industrialized construction of the steel bar components.

[0031] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for industrialized construction of bridge steel components based on BIM model data drive, characterized in that: The following steps are involved: S1. Establish a BIM model of steel components and optimize the steel structure; S2. Determine a splitting plan for the steel bar component and split the steel bar component into multiple semi-finished products; S3. Generate processing parameters for semi-finished products through the BIM model and transmit them to the production line; S4. Process the semi-finished products, collect the key dimension data of the semi-finished products, and determine whether the processing accuracy of the semi-finished products is qualified; save the key dimension data of the qualified semi-finished products into the database, and adjust the unqualified semi-finished products; S5. Reconstruct the actual semi-finished product BIM model based on the key dimension data of the semi-finished product in the database, perform virtual pre-assembly, and guide the assembly and forming of steel bar components; collect the key dimension data of steel bar components, determine whether the assembly accuracy of steel bar components is qualified, and adjust unqualified steel bar components.

2. The method for industrialized construction of bridge steel bar components based on BIM model data drive according to claim 1, characterized in that: In step S1, the bridge concrete structure is first divided into a plurality of standard segments, and the entire steel structure in each standard segment is regarded as a steel component.

3. The industrialized construction method for bridge steel bar components driven by BIM model data according to claim 1, characterized in that: The steel structure optimization in step S1 checks whether there is interference between the steel bars in the steel bar component through the BIM model, and adjusts the parts where interference occurs.

4. The method for industrialized construction of bridge steel reinforcement components based on BIM model data drive according to claim 1, characterized in that: In step S2, multiple splitting schemes are preliminarily set according to the structure of the steel bar component, where the semi-finished product includes a steel mesh and a steel block; then the final splitting scheme is determined based on the original design drawings and the difficulty of industrial forming of the steel mesh or steel block.

5. The method for industrialized construction of bridge steel bar components based on BIM model data drive according to claim 1, characterized in that: In step S3, the processing parameters include the overall size of the semi-finished product and the diameter, length, longitudinal and transverse spacing, bending angle and quantity of the required steel bars.

6. The method for industrialized construction of bridge steel reinforcement components based on BIM model data drive according to claim 1, characterized in that: The key dimensional data in step S4 and step S5 include dimensional data of the main structure of the semi-finished product or the steel bar component, and the dimensional data can be automatically measured by the precision detection system.

7. The method for industrialized construction of bridge steel bar components based on BIM model data drive according to claim 6, characterized in that: The precision detection system is a visual camera or a three-dimensional laser scanner.

8. The method for industrialized construction of bridge steel reinforcement components based on BIM model data drive according to claim 1, characterized in that: In step S4, a threshold is set for the deviation between each key dimension data of the semi-finished product and the corresponding processing parameters. When the deviation between all key dimensions and the corresponding processing parameters is less than the threshold, it is determined that the processing accuracy of the semi-finished product is qualified.

9. The method for industrialized construction of bridge steel reinforcement components based on BIM model data drive according to claim 1, characterized in that: In step S5, the virtual pre-assembled BIM model is used as a visual explanation to guide the assembly of steel bar components of the semi-finished product on the assembly frame; for the steel bar components with qualified assembly accuracy, interlayer hook bars and chamfered steel bars are installed to complete the industrialized construction of the steel bar components.

10. The method for industrialized construction of bridge steel bar components based on BIM model data drive according to claim 9, characterized in that: When the deviation between each key dimension data of the steel bar component and the corresponding design value meets the requirements, it is judged that the assembly accuracy of the steel bar component is qualified.

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