BIM (Building Information Modeling) model-based construction method and system for size embedded part for bridge frame hole

Abstract

The invention discloses a BIM model-based bridge frame hole size embedded part construction method and system, and relates to the technical field of data processing, and the method comprises the steps of establishing a bridge frame hole three-dimensional model, and obtaining hole opening template size information and support frame size information; mounting a hole template and acquiring an actual construction coordinate set, wherein the actual construction coordinate set comprises a first positioning coordinate point, a second positioning coordinate point and a third positioning coordinate point; simulating virtual construction information of the portal template, and obtaining a first prediction error; virtual construction information of the supporting frame is simulated, and a second prediction error is obtained according to the virtual construction information of the supporting frame; and a construction strategy is obtained according to the first prediction error and the second prediction error, supporting frame installation is completed according to the construction strategy, a pouring box is formed through pouring, and embedded part construction is completed in the pouring box. The method has the advantages that positioning is accurate, errors are reduced, and construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a construction method and system for pre-embedded parts for bridge holes based on a BIM model. Background Art

[0002] In modern construction technology, bridge tunnels are important components of connecting structures or passage spaces, and their construction accuracy and efficiency are directly related to the quality and progress of the entire project. With the rapid development of Building Information Modeling (BIM) technology, its application in construction is becoming more and more extensive, providing strong support for improving construction accuracy, optimizing resource allocation, and reducing construction conflicts. However, in the construction process of bridge tunnels, especially when it comes to the installation of dimensional embedded parts, there are still many challenges.

[0003] Traditional bridge hole construction methods often rely on two-dimensional drawings and on-site experience, which makes it difficult to intuitively and accurately reflect complex spatial relationships, resulting in positioning deviations, size discrepancies and other problems during the construction process. Especially during the embedded parts construction stage, due to the lack of precise three-dimensional guidance, the position and size of embedded parts often deviate, which not only affects the smooth progress of subsequent installation work, but also may pose a threat to structural safety. In addition, traditional methods are difficult to effectively predict errors during the construction process, resulting in frequent on-site adjustments, low construction efficiency and increased costs.

[0004] In view of the above problems, although the existing technologies have tried to apply BIM technology to the construction of bridge tunnels, most of them only stay at the level of model display and collision detection, and fail to fully utilize the dynamic adjustment and optimization capabilities of the BIM model during the construction process, especially in the construction of dimensional embedded parts. Therefore, how to achieve high-precision and high-efficiency operation of the construction of dimensional embedded parts of bridge tunnels based on the BIM model has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the defects in the prior art, the present invention provides a construction method and system for dimensional embedded parts for bridge frame holes based on the BIM model, which can accurately obtain the dimensional information of the hole template and the support frame, and predict and correct possible errors through simulated construction, thereby ensuring the accuracy of the embedded parts construction and the stability of the overall structure, improving construction efficiency and reducing construction costs.

[0006] A construction method for sized embedded parts for bridge hole based on BIM model, comprising: establishing a three-dimensional model of bridge hole according to the BIM model, obtaining hole template size information and support frame size information according to the three-dimensional model of bridge hole; installing the hole template on the foundation to be installed and obtaining the actual construction coordinate set of the hole template, the actual construction coordinate set including the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point located at the edge of the hole template; simulating the virtual construction information of the hole template located in the three-dimensional model of bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point and the hole template size information, and obtaining the first prediction error according to the virtual construction information of the hole template; simulating the virtual construction information of the support frame located in the three-dimensional model of bridge hole according to the virtual construction information of the hole template and the support frame size information, and obtaining the second prediction error according to the virtual construction information of the support frame; obtaining the construction strategy according to the first prediction error and the second prediction error, completing the installation of the support frame according to the construction strategy and forming a casting box by casting, and completing the construction of embedded parts in the casting box.

[0007] Optionally, simulating virtual construction information of the hole template located in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point, the third positioning coordinate point and the hole template size information includes: obtaining a predetermined position mark in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point; creating a virtual hole template according to the hole template size information, and matching the virtual hole template with the predetermined position mark; obtaining the spatial relationship between the virtual hole template and the three-dimensional model of the bridge hole and forming virtual construction information.

[0008] Optionally, obtaining the first prediction error according to the virtual construction information of the opening template includes: obtaining the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole according to the virtual construction information of the opening template; and obtaining the first prediction error according to the first minimum distance and the design distance of the opening template.

[0009] Optionally, the first prediction error is obtained according to the first minimum distance and the hole template design distance and is expressed as: I1 = α·|Δd min -D|; where I1 is the first prediction error, Δd min is the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole, D is the design distance, and α is the adjustment coefficient.

[0010] Optionally, obtaining the second prediction error according to the virtual construction information of the support frame includes: obtaining the second minimum distance between the virtual support frame and the three-dimensional model of the bridge hole according to the virtual construction information of the support frame; and obtaining the second prediction error according to the second minimum distance and the design distance of the support frame.

[0011] Optionally, obtaining a construction strategy based on the first prediction error and the second prediction error includes: if the first prediction error and the second prediction error are both greater than a preset threshold, removing the installed opening template and reinstalling it, re-obtaining a new first prediction error and a second prediction error and comparing them with the preset threshold again; if the first prediction error and the second prediction error are both greater than the preset threshold, completing the comparison and continuing construction.

[0012] A construction system for pre-embedded parts for bridge holes based on the BIM model is also provided. The system includes: an acquisition module, which is used to establish a three-dimensional model of the bridge hole according to the BIM model, and obtain the size information of the hole template and the size information of the support frame according to the three-dimensional model of the bridge hole; a measurement module, which is used to install the hole template on the foundation to be installed and obtain the actual construction coordinate set of the hole template, and the actual construction coordinate set includes a first positioning coordinate point, a second positioning coordinate point and a third positioning coordinate point located at the edge of the hole template; a first simulation prediction module, which is used to obtain the actual construction coordinate set of the hole template according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point. The first prediction error is obtained by simulating the virtual construction information of the opening template in the three-dimensional model of the bridge hole according to the virtual construction information of the opening template and the size information of the opening template, and obtaining the first prediction error according to the virtual construction information of the opening template; the second simulation prediction module is used to simulate the virtual construction information of the support frame in the three-dimensional model of the bridge hole according to the virtual construction information of the opening template and the size information of the support frame, and obtaining the second prediction error according to the virtual construction information of the support frame; the implementation module is used to obtain the construction strategy according to the first prediction error and the second prediction error, complete the installation of the support frame according to the construction strategy, form a casting box through casting, and complete the construction of embedded parts in the casting box.

[0013] Optionally, the first simulation prediction module is also used to: obtain a predetermined position mark in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point; create a virtual hole template according to the hole template size information, and match the virtual hole template with the predetermined position mark; obtain the spatial relationship between the virtual hole template and the three-dimensional model of the bridge hole and form virtual construction information.

[0014] Optionally, the first simulation prediction module is also used to: obtain a first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole according to the virtual construction information of the opening template; and obtain a first prediction error according to the first minimum distance and the design distance of the opening template.

[0015] Optionally, the implementation module is also used to: if the first prediction error and the second prediction error are both greater than a preset threshold, remove the installed opening template and reinstall it, re-obtain a new first prediction error and second prediction error and compare them with the preset threshold again; if the first prediction error and the second prediction error are both greater than the preset threshold, complete the comparison and continue construction.

[0016] The beneficial effects of the present invention are embodied in:

[0017] In the entire BIM-based construction method for embedded parts for bridge holes, firstly, the BIM technology is used to construct an accurate three-dimensional model of the bridge hole, which provides an intuitive and accurate spatial reference for construction and effectively solves the problem that traditional two-dimensional drawings are difficult to reflect complex spatial relationships. Secondly, by measuring the actual construction coordinates of the hole template on the spot and combining the BIM model for virtual construction simulation, the first prediction error and the second prediction error are obtained. These error data provide valuable adjustment basis, so that possible positioning deviations, size discrepancies and other problems can be predicted and corrected before construction, thereby greatly improving the accuracy and efficiency of construction. Furthermore, the construction strategy formulated based on the prediction error ensures the precise docking and stable connection between the support frame and the hole template, laying a solid foundation for the subsequent casting box structure and embedded parts construction. Finally, the precise installation of embedded parts in the casting box not only meets the design requirements, but also improves the safety and durability of the entire bridge hole construction. In summary, this technical solution achieves high-precision and high-efficiency construction of embedded parts for bridge hole sizes by making full use of the dynamic adjustment and optimization capabilities of the BIM model, effectively reducing construction costs, shortening construction period, and improving project quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a schematic diagram of the steps of the construction method of the pre-embedded parts for bridge holes based on the BIM model of the present invention;

[0020] Figure 2 It is a schematic diagram of a part of the steps S3 in the construction method of the pre-embedded size parts for bridge frame holes based on the BIM model of the present invention;

[0021] Figure 3 It is another part of the step schematic diagram of S3 in the construction method of the pre-embedded size parts for bridge frame holes based on the BIM model of the present invention;

[0022] Figure 4 It is a schematic diagram of some steps in S4 of the construction method of the bridge hole dimensional embedded parts based on the BIM model of the present invention;

[0023] Figure 5 It is a schematic diagram of some steps in S5 of the construction method of pre-embedded parts for bridge holes based on the BIM model of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1 As shown, a construction method for pre-embedded parts for bridge holes based on a BIM model is provided, and the method includes:

[0028] S1. Establish a three-dimensional model of the bridge hole according to the BIM model, and obtain the hole template size information and the support frame size information according to the three-dimensional model of the bridge hole;

[0029] S2, installing the opening template on the foundation to be installed and obtaining an actual construction coordinate set of the opening template, the actual construction coordinate set including a first positioning coordinate point, a second positioning coordinate point and a third positioning coordinate point located at the edge of the opening template;

[0030] S3, simulating virtual construction information of the hole template located in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point, the third positioning coordinate point and the hole template size information, and obtaining a first prediction error according to the virtual construction information of the hole template;

[0031] S4, simulating virtual construction information of the support frame located in the three-dimensional model of the bridge hole according to the virtual construction information of the hole template and the size information of the support frame, and obtaining a second prediction error according to the virtual construction information of the support frame;

[0032] S5. Obtain a construction strategy according to the first prediction error and the second prediction error, complete the installation of the support frame according to the construction strategy, form a casting box by casting, and complete the construction of embedded parts in the casting box.

[0033] In this embodiment, it should be noted that in S1, the BIM (Building Information Model) technology is first used to construct an accurate three-dimensional model of the bridge hole. This step is to fully integrate the design information, structural details and construction requirements of the bridge hole. Through BIM software, engineers can accurately display the maximum installation area of ​​the hole template and the support frame in a virtual environment according to the design drawings and actual needs, covering the spatial relationship between them, the connection method and the interaction with other structural components. On this basis, through the measurement and analysis function of the BIM model, the specific size information (such as length, width, height, etc.) of each hole template and the size parameters of the support frame (such as rod length, cross-sectional size, etc.) can be accurately extracted. In addition, due to the dynamic nature of the BIM model, it allows engineers to simulate and compare multiple schemes before construction, thereby optimizing the layout design of the hole template and the support frame, ensuring that they can be accurately docked to form a stable and cast box structure that meets the requirements for the installation of embedded parts.

[0034] In S2, a physical opening template is produced based on the precise size and position information of the opening template provided in the BIM model, and then the opening template is physically installed on the foundation to be installed at the actual construction site. Existing measurement technologies, such as laser rangefinders, total stations, or GPS positioning systems, can be used to accurately measure and mark the first positioning coordinate points, second positioning coordinate points, and third positioning coordinate points of the edge of the opening template, which together constitute the actual construction coordinate set of the opening template. The selection of these coordinate points is usually based on the geometric features of the template, such as corner points or key edge points, to ensure that the actual position and posture of the template can be fully and accurately reflected. For example: the first positioning coordinate point is often set at an obvious and easily identifiable corner of the template. As the starting point of the entire template positioning, this point is not only used to determine the horizontal position of the template, but also helps to confirm whether the rotation angle of the template is correct; the second positioning coordinate point is usually located at the edge or corner on the other side opposite to the first point. It and the first point together constitute a diagonal line of the template. By measuring the distance and angle between these two points, it is possible to verify whether the size of the template is accurate and whether unnecessary distortion or deformation has occurred; the third positioning coordinate point is located at another key position of the template, usually forming a triangle with the first two points to ensure the stable positioning of the template in three-dimensional space. This point not only helps to confirm the height of the template in the vertical direction, but also further enhances the stability and accuracy of the entire positioning system.

[0035] In S3, the actual construction coordinate set of the opening template previously obtained in S2, namely the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point, will be used, combined with the known opening template size information, and these actual data will be input into the BIM software to simulate the virtual construction state of the opening template in the three-dimensional model of the bridge hole. Through simulation, the virtual construction information of the opening template can be automatically generated, including the precise position and posture of the template and the deviation from the actual design. Next, these virtual construction information will be carefully analyzed, and the first prediction error will be obtained by calculating the difference between the virtual construction structure and the standard design structure. This error value reflects the maximum deviation of the opening template and can help predict the potential impact of these deviations on subsequent construction steps, especially the construction of embedded parts.

[0036] In S4, the virtual construction information of the opening template obtained in S3 is combined with the size information of the support frame. Specifically, according to the actual design size of the support frame, such as the length of the rod, the cross-sectional size, etc., the virtual construction state of the support frame in the three-dimensional model of the bridge hole is simulated. This process is not just a simple model construction, but requires the precise virtual docking of the support frame with the opening template to ensure that they are highly consistent with the design requirements in terms of spatial position, size and connection method. Through the simulation and analysis of BIM software, the virtual construction information of the support frame can be obtained, including the precise position and posture of the support frame and the interaction with the opening template and surrounding structural components. Next, these virtual construction information will be carefully analyzed, and the second prediction error will be obtained by comparing the differences between the virtual construction structure and the standard design structure. This second error value not only reflects the accuracy of the support frame installation, but more importantly, it can help predict whether the connection between the support frame and the opening template is stable, and the potential impact of this connection deviation on the subsequent casting of the box structure and embedded parts construction, thereby ensuring the accuracy and safety of the entire construction process.

[0037] In S5, a construction strategy is formulated based on the first prediction error and the second prediction error obtained in steps S3 and S4, respectively. These construction strategies will fully consider the differences between the actual installation of the opening formwork and the support frame and the design requirements, as well as the potential impact of these differences on subsequent construction steps, especially the casting box structure and embedded parts construction. Then, the actual installation of the support frame will be carried out according to this set of strategies to ensure that the connection between the support frame and the opening formwork is stable and meets the design requirements. After the installation of the support frame is completed, the casting operation will be carried out to form a casting box. Finally, in the casting box, the embedded parts will be accurately installed according to the design requirements and construction strategies of the embedded parts to ensure that the position, size and connection method of the embedded parts meet the needs of subsequent installation work, thereby ensuring the accuracy, safety and efficiency of the entire bridge hole construction process.

[0038] In summary, in the entire BIM model-based bridge hole size embedded parts construction method, first of all, the use of BIM technology to build a precise three-dimensional model of the bridge hole provides an intuitive and accurate spatial reference for construction, effectively solving the problem that traditional two-dimensional drawings are difficult to reflect complex spatial relationships. Secondly, by measuring the actual construction coordinates of the hole template on the spot and combining the BIM model for virtual construction simulation, the first prediction error and the second prediction error are obtained. These error data provide valuable adjustment basis, so that possible positioning deviations, size discrepancies and other problems can be predicted and corrected before construction, thereby greatly improving the accuracy and efficiency of construction. Furthermore, the construction strategy formulated based on the prediction error ensures the precise docking and stable connection between the support frame and the hole template, laying a solid foundation for the subsequent casting box structure and embedded parts construction. Finally, the precise installation of embedded parts in the casting box not only meets the design requirements, but also improves the safety and durability of the entire bridge hole construction. In summary, this technical solution achieves high-precision and high-efficiency construction of embedded parts for bridge hole sizes by making full use of the dynamic adjustment and optimization capabilities of the BIM model, effectively reducing construction costs, shortening construction period, and improving project quality.

[0039] like Figure 2 As shown, in one embodiment, in S3, according to the first positioning coordinate point, the second positioning coordinate point, the third positioning coordinate point and the hole template size information, the virtual construction information of the hole template located in the three-dimensional model of the bridge hole is simulated, including:

[0040] S31, acquiring a predetermined position mark in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point;

[0041] S32, creating a virtual hole template according to the hole template size information, and matching the virtual hole template with a predetermined position mark;

[0042] S33, obtaining the spatial relationship between the virtual opening template and the three-dimensional model of the bridge hole and forming virtual construction information.

[0043] In this embodiment, it should be noted that in S31, a predetermined position mark in the three-dimensional model of the bridge hole is obtained according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point. In the S2 stage, the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point of the edge of the hole template have been obtained through field measurement, and these coordinate points together constitute the precise position information of the hole template at the actual construction site. Then these actual coordinate points are input into the three-dimensional model of the bridge hole, and then the hole template size information is combined with the precise coordinate points to locate the position where the hole template should be placed, forming a "predetermined position mark". This mark is the reference point for the subsequent simulation of the virtual construction state of the hole template, ensuring that the simulated hole template position is basically consistent with the actual construction site.

[0044] In S32, a virtual opening template is created according to the opening template size information, and the virtual opening template is matched with the predetermined position mark. After obtaining the predetermined position mark, the next step is to create a virtual opening template in the BIM software according to the opening template size information. After the virtual opening template is created, it is necessary to match it with the predetermined position mark obtained in step S31 to ensure that they are completely consistent in terms of spatial position, direction, angle, etc. The completion of this step indicates that the virtual construction state of the opening template has been initially established, laying a solid foundation for subsequent analysis and simulation.

[0045] In step S33, the spatial relationship between the virtual opening template and the three-dimensional model of the bridge hole is obtained and virtual construction information is formed. The virtual opening template has been matched to the predetermined position mark, but it is only an isolated model element at this time. In step S33, the spatial relationship between the virtual opening template and the three-dimensional model of the bridge hole needs to be further analyzed, including its relative position with the surrounding structural components, interaction, possible collision points, etc.

[0046] like Figure 3 As shown, in one embodiment, obtaining the first prediction error according to the virtual construction information of the opening template in S3 includes:

[0047] S34, obtaining a first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole according to the virtual construction information of the opening template;

[0048] S35. Obtain a first prediction error according to the first minimum distance and the hole template design distance.

[0049] In this embodiment, it should be noted that in S34, the virtual hole template has been successfully matched to the predetermined position mark in the bridge hole stereo model, and the spatial relationship between them has been obtained. Next, in S34, it is necessary to further analyze these spatial relationships, especially the relative position relationship between the virtual hole template and the bridge hole stereo model (or other structural components) to find the first minimum distance between them. This "first minimum distance" refers to the distance between any part of the virtual hole template and the nearest structural component (such as wall, beam, other hole template, etc.) in the bridge hole stereo model. It reflects the space limitations or potential collision points that the virtual hole template may encounter during actual installation. In order to obtain this minimum distance, the measurement and analysis tools of the BIM software can be used to perform detailed distance measurements on the virtual hole template and the bridge hole stereo model. During the measurement process, all surfaces and edges of the virtual hole template need to be considered, as well as their relative positions to each structural component in the bridge hole stereo model. By comparing these distances one by one, the smallest distance value, namely the "first minimum distance", can be found. This distance value is crucial for subsequent analysis of prediction errors and formulation of construction strategies.

[0050] In S35, it is necessary to compare this actually measured minimum distance with the design distance of the opening template to obtain the first prediction error. The "opening template design distance" refers to the ideal installation distance set for the opening template according to the overall structure and construction requirements of the bridge hole during the design stage. This distance is usually clearly marked in the design drawings or BIM models. By comparing the first minimum distance and the opening template design distance, it can be intuitively seen whether the virtual opening template can achieve the spatial position required by the design during actual installation. If the first minimum distance is greater than the opening template design distance, it means that the virtual opening template may have too large a gap with the surrounding structural components during actual installation, which may affect the stability of the structure and the installation accuracy of the embedded parts. On the contrary, if the first minimum distance is less than the opening template design distance, it means that the virtual opening template may collide or interfere with the surrounding structural components, which will also cause construction problems. Therefore, the first prediction error is the difference between the first minimum distance and the opening template design distance. This error value reflects the spatial deviation or collision risk that the virtual opening template may encounter during actual installation. By analyzing and adjusting this error value, the installation position of the opening formwork can be accurately predicted and optimized before construction, thus ensuring the accuracy and safety of the entire construction process.

[0051] In one embodiment, the first prediction error is obtained according to the first minimum distance and the hole template design distance in S35 and is expressed as:

[0052] I1=α·|Δd min -D|; where

[0053] I1 is the first prediction error, Δd min is the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole, D is the design distance, and α is the adjustment coefficient.

[0054] In this embodiment, it should be noted that by calculating |Δd min -D|, the spatial distance deviation between the virtual opening template and the design requirements can be directly obtained. This deviation value is an absolute value, which represents the difference between the actual simulation situation and the ideal design state. Whether the difference is too large or too small, it can be accurately reflected. The adjustment coefficient α is introduced so that the sensitivity of the prediction error can be adjusted according to the actual construction situation or project requirements. For example, in some projects with particularly high precision requirements, the sensitivity to deviation can be increased by increasing the α value, so that more detailed adjustments and optimizations can be made before construction.

[0055] like Figure 4 As shown, in one embodiment, obtaining the second prediction error according to the virtual construction information of the support frame in S4 includes:

[0056] S41, obtaining a second minimum distance between the virtual support frame and the three-dimensional model of the bridge frame hole according to the virtual construction information of the support frame;

[0057] S42: Obtain a second prediction error according to the second minimum distance and the support frame design distance.

[0058] In this embodiment, it should be noted that in S41, first, the measurement and analysis functions of the BIM software are used to perform a detailed spatial relationship analysis on the virtual support frame and the three-dimensional model of the bridge hole, which includes the relative position relationship between the rods and nodes of the support frame and the walls, beams, opening templates and other structural components in the model; next, the distance between each part of the virtual support frame (such as the end of the rod, the node, etc.) and each structural component in the three-dimensional model of the bridge hole is measured one by one, which requires ensuring the comprehensiveness of the measurement, that is, taking into account all possible contact points or potential collision points of the support frame; among all the measured distances, find the smallest distance value, which is the "second minimum distance". This distance reflects the minimum space restriction or the closest potential collision point that the virtual support frame may encounter during actual installation. It is crucial for evaluating the installation accuracy of the support frame and its compatibility with surrounding structures.

[0059] In S42, first, it is necessary to clarify the "support frame design distance", which is the ideal installation distance set for the support frame during the design stage based on the overall structure of the bridge frame hole, construction requirements and functional requirements of the support frame. This distance is usually clearly marked in the design drawings or BIM models as a reference for construction. Next, the second minimum distance is compared with the support frame design distance. If the second minimum distance is greater than the support frame design distance, it means that the virtual support frame may have too large a gap with the surrounding structural components during actual installation, which may affect the stability and support effect of the support frame; on the contrary, if the second minimum distance is less than the support frame design distance, it means that the virtual support frame may collide or interfere with the surrounding structural components, which will cause installation difficulties or structural safety hazards. Finally, based on the difference between the second minimum distance and the support frame design distance, the second prediction error is calculated. This error value reflects the spatial deviation or collision risk that the virtual support frame may encounter during actual installation.

[0060] like Figure 5 As shown, in one embodiment, obtaining the construction strategy according to the first prediction error and the second prediction error in S5 includes:

[0061] S51, if the first prediction error and the second prediction error are both greater than the preset threshold, the installed hole template is removed and reinstalled, and a new first prediction error and a second prediction error are obtained and compared with the preset threshold again;

[0062] S52: If both the first prediction error and the second prediction error are greater than a preset threshold, the comparison is completed and the construction is continued.

[0063] In this embodiment, it should be noted that in S51, when the first prediction error and the second prediction error are both greater than the preset threshold, this means that the simulated construction state of the virtual hole template and the virtual support frame in the bridge hole stereo model is greatly deviated from the design requirements. This deviation may be caused by the inconsistency between the actual installation position of the hole template or the support frame and the design position, or by factors such as measurement errors and model accuracy limitations. In order to ensure the smooth progress of construction quality and subsequent work, decisive measures must be taken to correct it. Therefore, the construction team will decide to remove the hole template that has been installed on the foundation to be installed, which includes carefully releasing the template fixture, removing it from the current position, and ensuring that no damage is caused to the surrounding structure during the removal process. Subsequently, the team will adjust the installation position, direction or angle of the hole template based on the previous simulated construction experience and the error data obtained, and re-measure on the spot to obtain new first positioning coordinate points, second positioning coordinate points and third positioning coordinate points. These new coordinate points will be used to update the virtual construction information of the hole template in the BIM model, and re-simulate the construction to obtain new first prediction errors and second prediction errors. Only when the two error values ​​are both greater than the preset threshold value can it be confirmed that the installation position of the opening formwork and the support frame meets the design requirements and subsequent construction work can continue.

[0064] In S52, if both the first prediction error and the second prediction error are greater than the preset threshold, that is, at least one error value is within the acceptable range, this indicates that the simulated construction status of the virtual opening template and the virtual support frame in the three-dimensional model of the bridge hole is basically consistent with the design requirements. In this case, the construction team does not need to remove the installed opening template, but can directly continue the construction. They will formulate detailed construction strategies based on the current simulated construction information and error data, including the specific installation steps of the support frame, the construction method of the casting box, and the precise installation position of the embedded parts. These strategies will fully consider the possible impact of the error value on the construction process and take corresponding measures to prevent or correct it. For example, if the first prediction error is large, but the second prediction error is small, the team may focus on the adjustment of the opening template to ensure its accurate docking with the surrounding structure; if the second prediction error is large, the monitoring and adjustment of the support frame installation process may be strengthened to ensure its stability and support effect. Through such meticulous construction strategy formulation and execution, the high precision, high efficiency and high safety of the entire bridge hole construction process can be ensured.

[0065] A construction system for pre-embedded parts for bridge holes based on the BIM model is also provided. The system includes: an acquisition module, which is used to establish a three-dimensional model of the bridge hole according to the BIM model, and obtain the size information of the hole template and the size information of the support frame according to the three-dimensional model of the bridge hole; a measurement module, which is used to install the hole template on the foundation to be installed and obtain the actual construction coordinate set of the hole template, and the actual construction coordinate set includes a first positioning coordinate point, a second positioning coordinate point and a third positioning coordinate point located at the edge of the hole template; a first simulation prediction module, which is used to obtain the actual construction coordinate set of the hole template according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point. The first prediction error is obtained by simulating the virtual construction information of the opening template in the three-dimensional model of the bridge hole according to the virtual construction information of the opening template and the size information of the opening template, and obtaining the first prediction error according to the virtual construction information of the opening template; the second simulation prediction module is used to simulate the virtual construction information of the support frame in the three-dimensional model of the bridge hole according to the virtual construction information of the opening template and the size information of the support frame, and obtaining the second prediction error according to the virtual construction information of the support frame; the implementation module is used to obtain the construction strategy according to the first prediction error and the second prediction error, complete the installation of the support frame according to the construction strategy, form a casting box through casting, and complete the construction of embedded parts in the casting box.

[0066] In one embodiment, the first simulation prediction module is also used to: obtain a predetermined position mark in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point; create a virtual hole template according to the hole template size information, and match the virtual hole template with the predetermined position mark; obtain the spatial relationship between the virtual hole template and the three-dimensional model of the bridge hole and form virtual construction information.

[0067] In one embodiment, the first simulation prediction module is also used to: obtain the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole according to the virtual construction information of the opening template; and obtain the first prediction error according to the first minimum distance and the design distance of the opening template.

[0068] In one embodiment, the implementation module is also used to: if the first prediction error and the second prediction error are both greater than a preset threshold, remove the installed opening template and reinstall it, re-obtain the new first prediction error and second prediction error and compare them with the preset threshold again; if the first prediction error and the second prediction error are not both greater than the preset threshold, complete the comparison and continue construction.

[0069] In this embodiment, it should be noted that, regarding the above-mentioned BIM model-based bridge frame hole dimensional embedded parts construction system, the specific method of performing the operation has been described in detail in the implementation method of the BIM model-based bridge frame hole dimensional embedded parts construction method, and will not be elaborated here.

[0070] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0072] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A construction method for pre-embedded parts for bridge holes based on a BIM model, characterized in that: include: Establish a three-dimensional model of the bridge hole according to the BIM model, and obtain the hole template size information and support frame size information according to the three-dimensional model of the bridge hole; Installing the opening template on the foundation to be installed and obtaining an actual construction coordinate set of the opening template, the actual construction coordinate set including a first positioning coordinate point, a second positioning coordinate point and a third positioning coordinate point located at an edge of the opening template; Simulating virtual construction information of the hole template located in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point, the third positioning coordinate point and the hole template size information, and obtaining a first prediction error according to the virtual construction information of the hole template; Simulating virtual construction information of the support frame located in the three-dimensional model of the bridge hole according to the virtual construction information of the hole template and the size information of the support frame, and obtaining a second prediction error according to the virtual construction information of the support frame; A construction strategy is obtained according to the first prediction error and the second prediction error, the support frame is installed according to the construction strategy, a casting box is formed by casting, and the embedded parts are constructed in the casting box.

2. The construction method of pre-embedded parts for bridge holes based on the BIM model according to claim 1 is characterized in that: The method of simulating the virtual construction information of the hole template located in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point, the third positioning coordinate point and the hole template size information includes: Acquire a predetermined position mark in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point; Creating a virtual hole template according to the hole template size information, and matching the virtual hole template with a predetermined position mark; The spatial relationship between the virtual opening template and the three-dimensional model of the bridge hole is obtained and virtual construction information is formed.

3. The construction method of pre-embedded parts for bridge frame holes based on the BIM model according to claim 2 is characterized in that: The obtaining of the first prediction error according to the virtual construction information of the opening template includes: Acquire the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole according to the virtual construction information of the opening template; A first prediction error is obtained according to the first minimum distance and the hole template design distance.

4. The construction method of pre-embedded parts for bridge holes based on the BIM model according to claim 3 is characterized in that: The first prediction error obtained according to the first minimum distance and the hole template design distance is expressed as: I1=α·|Δd min -D|;among, I1 is the first prediction error, Δd min is the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole, D is the design distance, and α is the adjustment coefficient.

5. The construction method of pre-embedded parts for bridge holes based on the BIM model according to claim 4 is characterized in that: The obtaining of the second prediction error according to the virtual construction information of the support frame comprises: Acquire the second minimum distance between the virtual support frame and the three-dimensional model of the bridge frame hole according to the virtual construction information of the support frame; A second prediction error is obtained according to the second minimum distance and the support frame design distance.

6. The construction method of pre-embedded parts for bridge frame holes based on the BIM model according to claim 1 is characterized in that: The obtaining of the construction strategy according to the first prediction error and the second prediction error comprises: If both the first prediction error and the second prediction error are greater than the preset threshold, the installed opening template is removed and reinstalled, and the new first prediction error and the second prediction error are reacquired and compared with the preset threshold again; If both the first prediction error and the second prediction error are greater than the preset threshold, the comparison is completed and the construction continues.

7. A construction system for pre-embedded parts for bridge holes based on a BIM model, characterized in that: The system comprises: An acquisition module is used to establish a three-dimensional model of the bridge hole according to the BIM model, and to obtain hole template size information and support frame size information according to the three-dimensional model of the bridge hole; A measurement module is used to install the opening template on the foundation to be installed and obtain an actual construction coordinate set of the opening template, wherein the actual construction coordinate set includes a first positioning coordinate point, a second positioning coordinate point and a third positioning coordinate point located at the edge of the opening template; A first simulation prediction module is used to simulate the virtual construction information of the hole template located in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point, the third positioning coordinate point and the hole template size information, and obtain a first prediction error according to the virtual construction information of the hole template; The second simulation prediction module is used to simulate the virtual construction information of the support frame located in the three-dimensional model of the bridge hole according to the virtual construction information of the hole template and the size information of the support frame, and obtain the second prediction error according to the virtual construction information of the support frame; The implementation module is used to obtain a construction strategy based on the first prediction error and the second prediction error, complete the installation of the support frame according to the construction strategy, form a casting box through casting, and complete the construction of embedded parts in the casting box.

8. The BIM model-based bridge hole size embedded parts construction system according to claim 7 is characterized in that: The first simulation prediction module is also used for: Acquire a predetermined position mark in the three-dimensional model of the bridge hole according to the first positioning coordinate point, the second positioning coordinate point and the third positioning coordinate point; Creating a virtual hole template according to the hole template size information, and matching the virtual hole template with a predetermined position mark; The spatial relationship between the virtual opening template and the three-dimensional model of the bridge hole is obtained and virtual construction information is formed.

9. The BIM model-based bridge hole size embedded parts construction system according to claim 8, characterized in that: The first simulation prediction module is also used for: Acquire the first minimum distance between the virtual opening template and the three-dimensional model of the bridge hole according to the virtual construction information of the opening template; A first prediction error is obtained according to the first minimum distance and the hole template design distance.

10. The BIM model-based bridge hole size embedded parts construction system according to claim 9, characterized in that: The implementation module is also used for: If both the first prediction error and the second prediction error are greater than the preset threshold, the installed opening template is removed and reinstalled, and the new first prediction error and the second prediction error are reacquired and compared with the preset threshold again; If both the first prediction error and the second prediction error are greater than the preset threshold, the comparison is completed and the construction continues.

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