Parametric modeling method for curved bridge based on bim and GIS technology

Abstract

The application relates to the technical field of bridge parameterized modeling, and discloses a curve bridge parameterized modeling method based on BIM and GIS technology, which comprises the following steps: performing structural decomposition on a target curve bridge to obtain the characteristic cross sections of the profile components of different bridge sections and corresponding constraint conditions; performing parameterized modeling on the bridge sections according to the characteristic cross sections and the constraint conditions to obtain bridge section models; assembling the bridge section models to obtain a curve bridge BIM splicing model; constructing a spline curve model and generating a bridge overall model according to the curve bridge BIM splicing model and the spline curve model; and performing model loading matching based on the bridge overall model to generate a bridge overall parameterized model scheme. The application can realize parameterized driving and data linkage updating of a complex bridge structure.

Description

Technical Field

[0001] The present application relates to the technical field of bridge parametric modeling, and in particular to a parametric modeling method for curved bridges based on BIM and GIS technologies. Background Art

[0002] BIM (Building Information Modeling) is a building model created based on all relevant data from a construction project. It simulates the real-world information of a building through digital information simulation. It runs through the entire project process, from design to construction to operation, providing a platform for all parties involved in the project to exchange and share engineering information. GIS (Geographic Information System) is a computer-based tool that can analyze and process spatial information. In bridge design, GIS is primarily used to provide macro-geographic environmental information, such as topography, landforms, and water systems.

[0003] To ensure greater project compatibility and applicability, bridge BIM models are created and loaded into a GIS environment, integrating BIM and GIS technologies. The geospatial data provided by GIS provides a more comprehensive context for the BIM model, demonstrating the relationship between the bridge and its surroundings. Through parametric adaptation, the constructed bridge model closely resembles the actual geographic environment, improving design efficiency and providing a visual evaluation solution for project implementation. This helps designers improve productivity, identify design issues earlier and enable timely optimization and revision, while enhancing communication and information sharing. By combining parametric information in the BIM model with geographic data in the GIS environment, building monitoring and maintenance can be improved, enhancing facility management efficiency. Combining BIM's 3D model with GIS's spatial analysis allows users to better understand the spatial impact of a project, such as the surrounding environment and traffic flow. The integration of BIM and GIS is fundamental to the development of smart cities, supporting data-driven decision-making and enabling more efficient management and services for bridge projects.

[0004] To date, the existing BIM model and GIS environment have a low degree of compatibility. The main difficulties in applying them to engineering projects include: (1) Data integration and standardization: The bridge BIM model and GIS environment are two independent systems, each with different data formats and standards. BIM models usually contain rich structural information, while GIS data focuses on geographic spatial information. When combining the two, it is necessary to solve problems such as data format conversion, coordinate system consistency, and data semantic matching. (2) Geometric complexity processing: Complex curved bridge BIM models usually have unique line types and complex structural forms, such as cable-stayed bridges, suspension bridges, arch bridges, etc. In the GIS environment, many factors need to be considered, including topography, geology, hydrology, traffic flow, etc. The two are highly complex, and matching adaptability requires accurate docking and coordination. (3) Integration and geographic positioning: In the integration of BIM models and GIS environments, the bridge model needs to be accurately positioned in the earth coordinate system to facilitate spatial relationship analysis with terrain, road networks and other infrastructure. This requires the BIM model to have geographic reference properties and be able to be visualized and spatially analyzed on the GIS environment platform.

[0005] Taking bridge projects as an example, the application of traditional parametric BIM models to GIS systems has matured, enabling parameter-driven bridge design and data-linked updates. However, as projects become more complex, various departments are tightening their review of design plans. For complex structures, such as curved beams and high-order curved beams, the uniqueness and complexity of the structural solutions make parameter-driven design and data-linked updates difficult to achieve with existing technology.

[0006] Therefore, how to realize parametric driving and data linkage updating of complex bridge structures is a problem that needs to be solved urgently.

[0007] The above content is only used to assist in understanding the technical solution of this application and does not constitute an admission that the above content is prior art. Summary of the Invention

[0008] The main purpose of this application is to provide a parametric modeling method for curved bridges based on BIM and GIS technology, aiming to solve the technical problem of how to achieve parametric drive and data linkage update of complex bridge structures.

[0009] To achieve the above objectives, this application proposes a parametric modeling method for curved bridges based on BIM and GIS technology, the method comprising:

[0010] Perform structural decomposition on the target curved bridge to obtain the characteristic cross-sections of the profile components of different bridge segments and the corresponding constraints;

[0011] Performing parametric modeling of the bridge segment according to the characteristic cross section and the constraint conditions to obtain a bridge segment model;

[0012] Assemble according to the bridge segment model to obtain a curved beam BIM splicing model;

[0013] Constructing a spline curve model, and generating an overall bridge model based on the curved beam BIM splicing model and the spline curve model;

[0014] Model loading matching is performed based on the overall bridge model to generate an overall bridge parameterized model solution.

[0015] In one embodiment, the structural decomposition of the target curved bridge to obtain characteristic cross-sections of profile components of different bridge segments and corresponding constraints includes:

[0016] Obtain the bridge structure characteristics and construction methods of the target curved bridge;

[0017] The target curved bridge is structurally decomposed according to the bridge structural characteristics and the construction method to obtain characteristic cross-sections of profile components of different bridge segments and corresponding constraint conditions.

[0018] In one embodiment, the assembling according to the bridge segment model to obtain the curved beam BIM splicing model includes obtaining a reference line of each bridge segment;

[0019] Multi-section binding is performed on the contour components in the bridge segment model according to the span direction constraint of the reference line to obtain a curved beam BIM splicing model.

[0020] In one embodiment, the construction of the spline curve model and the generation of the overall bridge model based on the curved beam BIM splicing model and the spline curve model include:

[0021] Obtain the amplitude constraint and span constraint of the bridge deck guide line;

[0022] The bridge deck guide line is parameter-driven by the amplitude constraint and the span constraint to generate a spline curve model;

[0023] The curved beam BIM splicing model and the spline curve model are constrained and associated to generate an overall bridge model.

[0024] In one embodiment, performing model loading matching based on the overall bridge model to generate an overall bridge parameterized model solution includes:

[0025] Building a bridge model library according to the overall bridge model;

[0026] Obtaining the target line design position in the GIS system, and determining the bridge design range based on the target line design position;

[0027] Design a bridge span scheme according to the bridge design scope to obtain an initial bridge scheme;

[0028] The bridge model is loaded and matched according to the initial bridge scheme and the bridge model library to obtain an overall parameterized model scheme of the bridge.

[0029] In one embodiment, the loading and matching of the bridge model according to the initial bridge scheme and the bridge model library to obtain the overall parametric model scheme of the bridge includes:

[0030] Determining a span scheme for a curved section and a span scheme for a straight section within a design range of the bridge based on the initial bridge scheme;

[0031] Loading and matching the curved section bridge scheme model according to the bridge span scheme of the curved section and the bridge model library to obtain a curved section bridge parameterized model;

[0032] According to the bridge span scheme of the straight section, the conventional bridge parametric model is loaded to obtain the straight section bridge parametric model;

[0033] A bridge overall parameterized model solution is generated according to the curved section bridge parameterized model and the straight section bridge parameterized model.

[0034] In one embodiment, the loading and matching of the curved section bridge scheme model according to the bridge span scheme of the curved section and the bridge model library to obtain the curved section bridge parameterized model includes:

[0035] Matching the bridge model library according to the bridge span scheme of the curved section to obtain a model to be loaded;

[0036] Acquiring curve parameters of the curve segment, and transferring the curve parameters to the guide curve of the model to be loaded to obtain a new guide curve;

[0037] The new guide curve is matched and overlapped with the curve section to obtain a parameterized model of the curve section bridge.

[0038] In addition, to achieve the above-mentioned purpose, the present application also proposes a parametric modeling device for curved bridges based on BIM and GIS technology, the parametric modeling device for curved bridges based on BIM and GIS technology comprising:

[0039] Decomposition module, used to decompose the target curved bridge structure to obtain the characteristic cross-sections of the profile components of different bridge segments and the corresponding constraints;

[0040] a modeling module, configured to perform parameterized modeling of a bridge segment according to the characteristic section and the constraint condition, to obtain a bridge segment model;

[0041] an assembling module, configured to assemble according to the bridge segment model, to obtain a curved bridge BIM splicing model;

[0042] a generating module, configured to construct a spline curve model, and generate a bridge overall model according to the curved bridge BIM splicing model and the spline curve model;

[0043] a matching module, configured to perform model loading matching based on the bridge overall model, to generate a bridge overall parameterized model scheme.

[0044] In addition, to achieve the above object, the present application further provides a curved bridge parameterized modeling device based on BIM and GIS technology, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the curved bridge parameterized modeling method based on BIM and GIS technology as described above.

[0045] In addition, to achieve the above object, the present application further provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program is executed by a processor to implement the steps of the curved bridge parameterized modeling method based on BIM and GIS technology as described above.

[0046] In addition, to achieve the above object, the present application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the curved bridge parameterized modeling method based on BIM and GIS technology as described above.

[0047] The present application provides a curved bridge parameterized modeling method based on BIM and GIS technology, which firstly decomposes the structure of a target curved bridge to obtain the characteristic section of the profile member of different bridge segments and the corresponding constraint condition; performs parameterized modeling of a bridge segment according to the characteristic section and the constraint condition, to obtain a bridge segment model; assembles according to the bridge segment model, to obtain a curved bridge BIM splicing model; constructs a spline curve model, and generates a bridge overall model according to the curved bridge BIM splicing model and the spline curve model; performs model loading matching based on the bridge overall model, to generate a bridge overall parameterized model scheme, which can realize parameterized driving and data linkage updating of a complex bridge structure.

[0048] In summary, this application constructs a bridge segment model by obtaining characteristic sections and constraints through structural decomposition of the target curved bridge, splices it into a curved beam BIM splicing model, and associates it with the spline curve model constraints to obtain the overall bridge model, and then performs model loading and matching to generate an overall parametric model solution for the bridge. This overcomes the current technical defect that it is difficult to achieve parametric drive and data linkage update for complex structures, and can achieve parametric drive and data linkage update for complex bridge structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] Figure 1 A flow chart of the first embodiment of the parametric modeling method for curved bridges based on BIM and GIS technology provided in this application;

[0052] Figure 2 A schematic diagram of the constraint relationship of curved beam segments provided in Example 1 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0053] Figure 3 A schematic diagram of the cross-section constraint relationship of a curved beam provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0054] Figure 4 A schematic diagram of the height constraint binding of the side span of a curved beam provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0055] Figure 5 A schematic diagram of the amplitude constraint binding of the side span of a curved beam provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0056] Figure 6 A schematic diagram of the height constraint binding of the cantilevered variable height section of a curved beam provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0057] Figure 7 A schematic diagram of the amplitude constraint binding of the cantilevered height-changing section of a curved beam provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0058] Figure 8 A schematic diagram of height constraint binding for the zero-number segment of a curved beam with equal height provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0059] Figure 9 A schematic diagram of the amplitude constraint binding of the zero-number segment of the curved beam provided in Example 1 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0060] Figure 10 A schematic diagram of high-order curved beam parametric modeling provided in Example 1 of the method for parametric modeling of curved bridges based on BIM and GIS technology of this application;

[0061] Figure 11 A schematic diagram of the overall span constraint binding of a curved beam provided in Example 1 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0062] Figure 12 A schematic diagram of a high-order curved bridge BIM model provided in Example 1 of the method for parametric modeling of curved bridges based on BIM and GIS technology of this application;

[0063] Figure 13 A schematic diagram of a high-order curved bridge BIM splicing model provided in Example 1 of the method for parametric modeling of curved bridges based on BIM and GIS technology of this application;

[0064] Figure 14 A schematic diagram of a traditional high-order bridge BIM model provided in Example 1 of the method for parametric modeling of a curved bridge based on BIM and GIS technology of this application;

[0065] Figure 15 A schematic diagram of a traditional high-order bridge BIM splicing model provided in Example 1 of the method for parametric modeling of a curved bridge based on BIM and GIS technology of this application;

[0066] Figure 16 A schematic diagram of guide line amplitude constraint binding provided in Example 1 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0067] Figure 17 A schematic diagram of the guide line span constraint binding provided in Example 1 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0068] Figure 18 A schematic diagram of the curved beam model and guide line constraint binding provided in Example 1 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0069] Figure 19 A schematic diagram of the linked update of the curved beam model and guide lines provided in Example 1 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0070] Figure 20 A flow chart of Example 2 of the parametric modeling method for curved bridges based on BIM and GIS technology provided in this application;

[0071] Figure 21 A schematic diagram of a parametric model of a straight-line bridge provided in Example 2 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0072] Figure 22 A schematic diagram of a bridge parametric model of a curved segment provided in Example 2 of the method for parametric modeling of a curved bridge based on BIM and GIS technology of this application;

[0073] Figure 23 A schematic diagram of a curved bridge scheme model matching provided in Example 2 of the method for parametric modeling of curved bridges based on BIM and GIS technology of this application;

[0074] Figure 24 A schematic diagram of a bridge parametric model scheme provided in Example 2 of the method for parametric modeling of curved bridges based on BIM and GIS technology of this application;

[0075] Figure 25 A schematic diagram of initial scheme parameter settings provided for Example 2 of the parametric modeling method for curved bridges based on BIM and GIS technology in this application;

[0076] Figure 26 A schematic diagram of updating the height of a curved beam based on project plan parameters provided in Example 2 of the parametric modeling method for a curved bridge based on BIM and GIS technology of this application;

[0077] Figure 27 A schematic diagram of updating the curved beam span based on project plan parameters provided in Example 2 of the method for parametric modeling of curved bridges based on BIM and GIS technology of this application;

[0078] Figure 28 A schematic diagram of updating the curved beam amplitude based on project plan parameters provided in Example 2 of the parametric modeling method for curved bridges based on BIM and GIS technology of this application;

[0079] Figure 29 This is a schematic diagram of the module structure of a curved bridge parametric modeling device based on BIM and GIS technology in an embodiment of the present application;

[0080] Figure 30This is a schematic diagram of the equipment structure of the hardware operating environment involved in the parametric modeling method of curved bridges based on BIM and GIS technology in an embodiment of the present application.

[0081] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0082] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0083] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0084] The main solution of the embodiment of the present application is: structurally decompose the target curved bridge to obtain the characteristic cross-sections and corresponding constraints of the contour components of different bridge segments; perform parametric modeling of the bridge segments based on the characteristic cross-sections and the constraints to obtain a bridge segment model; assemble the bridge segment models to obtain a curved beam BIM splicing model; construct a spline curve model, and generate an overall bridge model based on the curved beam BIM splicing model and the spline curve model; perform model loading and matching based on the overall bridge model to generate an overall bridge parametric model solution.

[0085] Taking bridge projects as an example, the technology for applying traditional parametric bridge BIM models to GIS systems to achieve parametric drive and data linkage updates for bridge plans has matured. However, as projects become more complex, various departments are tightening their review of plans. For complex structures such as curved beams and high-order curved beams, the uniqueness and complexity of the structural solutions make parametric drive and data linkage updates difficult to implement with existing technology. Therefore, achieving parametric drive and data linkage updates for complex bridge structures is a pressing issue.

[0086] This application constructs a bridge segment model by decomposing the target curved bridge into characteristic sections and constraints, splicing it into a curved beam BIM splicing model and associating it with the spline curve model constraints to obtain an overall bridge model, and then performs model loading and matching to generate an overall parametric model solution for the bridge. This overcomes the current technical defect that it is difficult to achieve parametric drive and data linkage update for complex structures, and can achieve parametric drive and data linkage update for complex bridge structures.

[0087] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device capable of performing the above functions, a curved bridge parametric modeling device based on BIM and GIS technology, etc. The following describes this embodiment and the following embodiments using a curved bridge parametric modeling device based on BIM and GIS technology as an example.

[0088] Based on this, the embodiment of the present application provides a parametric modeling method for curved bridges based on BIM and GIS technology, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the parametric modeling method for curved bridges based on BIM and GIS technology in this application.

[0089] In this embodiment, the parametric modeling method for curved bridges based on BIM and GIS technology includes steps S10 to S50:

[0090] Step S10 : performing structural decomposition on the target curved bridge to obtain characteristic cross sections of profile components of different bridge segments and corresponding constraint conditions.

[0091] It should be noted that the target curved bridge refers to a bridge structure with a complex curved shape. The target curved bridge can be a curved beam or a high-order curved beam, or other bridge structures with complex curved shapes, such as a three-span continuous beam, a four-span continuous beam, a suspension bridge, a cable-stayed bridge, etc. This embodiment does not impose specific restrictions on this. This embodiment uses a three-span continuous beam as an example for illustration. Structural decomposition refers to splitting the overall structure of the bridge into several independent segments, each segment containing the characteristic cross-section and constraints of its contour components. Contour components refer to the main parts that constitute the bridge structure, such as piers, abutments, beams, bridge decks, etc. The characteristic cross-section refers to the cross-sectional shape of the bridge segment at a specific position, and the constraints include the connection relationship between the bridge segments, force characteristics, etc. Through structural decomposition, the various components of the bridge and their interactions can be more clearly understood.

[0092] In the specific implementation, when the target curved bridge is a three-span continuous beam, the three-span continuous beam is constructed by lofting multiple sections of the box beam through the parametric component designer. By picking different sections, loading the section profile components, and setting the corresponding constraints, it can be quickly generated through multiple sections. Different reference lines are established for the beam segments, which can be specifically divided into: end section, curved section, and support section. The span direction (X-axis) of the newly built curved bridge is parametrically modeled based on the five-part span constraint reference line, such as Figure 2 As shown, Figure 2 Schematic diagram of the constraint relationship of curved beam segments.

[0093] In a feasible embodiment, step S10 may include: obtaining the bridge structural characteristics and construction method of the target curved bridge; structurally decomposing the target curved bridge according to the bridge structural characteristics and the construction method to obtain characteristic cross-sections of contour components of different bridge segments and corresponding constraints.

[0094] It should be noted that the structural characteristics of a bridge refer to information such as the geometric shape, size, and material properties of the bridge, including geometric parameters such as the length, width, height, curve radius, and slope of the bridge, as well as the type of materials used in the bridge and the size of its components. The construction method, on the other hand, involves the technology and techniques used in the construction of the bridge, including the construction process, construction sequence, and construction equipment, etc. This embodiment does not impose any specific restrictions on this.

[0095] It can be understood that the structure is decomposed according to the structural characteristics and construction methods of the bridge, and the characteristic sections and constraints are determined. The main constraints of the profile components are the beam height, the left and right deviation of the profile center, etc. Figure 3 As shown, Figure 3 Schematic diagram of the constraint relationship of the curved beam profile section.

[0096] Step S20 , performing parametric modeling of the bridge segment according to the characteristic cross section and the constraint conditions to obtain a bridge segment model.

[0097] It should be noted that parametric modeling refers to the use of computer software to define parameters such as the geometry, dimensions, and material properties of a bridge segment based on its characteristic cross-section and constraints, using programming languages ​​or graphical interfaces, thereby generating a three-dimensional model of the bridge segment. In this embodiment, parametric modeling can be performed using BIM software such as Revit and ArchiCAD. By defining parametric rules and constraints, a three-dimensional model of the bridge segment can be quickly generated, ensuring the accuracy and consistency of the model.

[0098] It is understandable that the high-order beam segment model is used to model the cantilever variable height segment of the bridge, the equal height zero segment, the side span current stage, and the closing segment, so as to obtain the BIM model of each bridge segment. The modeling method is through multi-section lofting, and each part is composed of three sections, and the constraints of the height and amplitude are bound separately. The closing segment modeling can refer to the equal height zero segment modeling, and the parametric modeling can be completed by binding the height H0. The cantilever segment contour components can be set with different center left and right offset amplitudes and heights, and the parametric drive of the curved beam in the amplitude (Y axis) and height (Z axis) dimensions can be established.

[0099] It is worth noting that the parametric modeling of different parts of the curved beam includes the height constraint binding of the curved beam side span segment, the amplitude constraint binding of the curved beam side span segment, the height constraint binding of the curved beam cantilevered height-changing segment, the amplitude constraint binding of the curved beam cantilevered height-changing segment, the height constraint binding of the curved beam equal height zero segment, the amplitude constraint binding of the curved beam equal height zero segment, and the parametric modeling of high-order curved beams, such as Figure 4 to Figure 10 As shown, Figure 4 This is a schematic diagram of the height constraint binding of the curved beam side span. Figure 5 This is a schematic diagram of the amplitude constraint binding of the curved beam side span. Figure 6 This is a schematic diagram of the height constraint binding of the curved beam cantilevered height-changing section. Figure 7 This is a schematic diagram of the amplitude constraint binding of the curved beam cantilever height change section. Figure 8 This is a diagram of the height constraint binding for the zero-number segment of the curved beam. Figure 9 This is a schematic diagram of the amplitude constraint binding of the zero-number segment of the curved beam. Figure 10 Schematic diagram of parametric modeling of high-order curved beams.

[0100] Step S30: assembling the bridge segment model to obtain a curved beam BIM splicing model.

[0101] It should be noted that the assembly process involves combining the BIM models of different bridge segments obtained through parametric modeling according to the actual construction sequence and location. This requires consideration of the connection method between segments, the control of construction errors, and the stability of the overall structure. During the assembly process, the collision detection function of the BIM software can be used to ensure that there are no conflicts between the various components, and dynamic simulations can be performed to verify the stress conditions of the structure during construction and use. After the assembly is completed, a complete curved beam BIM splicing model can be generated. This model not only contains the geometric information of the bridge, but also includes information such as material properties, construction sequence, and construction equipment.

[0102] In a feasible implementation, step S30 may include: obtaining reference lines of each bridge segment; and performing multi-section binding on the contour components in the bridge segment model according to the span direction constraints of the reference lines to obtain a curved beam BIM splicing model.

[0103] It's important to note that the reference lines for each bridge segment define their relative position and orientation in space. The span-direction constraints of the reference lines ensure that the segments are correctly aligned during assembly, avoiding misalignment and angular deviation. During the multi-section binding process, the reference lines serve as a benchmark, enabling the precise positioning and binding of profile components according to predefined rules and constraints.

[0104] It can be understood that by modeling the four parts of the side span section, the cantilever section, the zero section and the closure section, the side span section BIM model, the cantilever section BIM model, the zero section BIM model and the closure section BIM model are obtained, and the span direction (X axis) constraint of the reference line is combined to bind the internal components of multiple sections, that is, to generate multi-dimensional parameterized driving, as shown in Figure 11 , Figure 11 is a whole span constraint binding diagram of a curved beam. Finally, the curved beam BIM splicing model is completed, as shown in Figure 12 to 15 , Figure 12 is a high-order curved bridge BIM model in the embodiment, Figure 13 is a high-order curved bridge BIM splicing model, Figure 14 is a traditional high-order bridge BIM model, Figure 15 is a traditional high-order bridge BIM splicing model.

[0105] Step S40, construct a spline curve model, and generate a bridge overall model according to the curved beam BIM splicing model and the spline curve model.

[0106] It should be noted that the spline curve model is a mathematical model for describing smooth curves. In bridge design, the spline curve model can provide accurate curve shapes to meet the geometric requirements of complex bridge structures. By constructing a spline curve model, the control points of the curve can be flexibly adjusted to optimize the alignment of the bridge.

[0107] It can be understood that the spline curve model is obtained by parameterizing modeling according to the bridge guide line, and the bridge overall model driven by the parameterized spline curve is formed by constraint association according to the curved beam BIM splicing model and the spline curve model.

[0108] In a possible implementation, step S40 can include: obtaining amplitude constraints and span constraints of the bridge guide line; parameter driving the bridge guide line through the amplitude constraints and span constraints to generate a spline curve model; and constraint association of the curved beam BIM splicing model and the spline curve model to generate a bridge overall model.

[0109] It should be noted that the bridge guide line is a series of key points preset in bridge design, which define the curve direction of the bridge in the horizontal plane and the vertical plane. The amplitude constraint of the bridge guide line mainly limits the variation degree of the curve in the vertical direction, that is, the height or depth variation range of the bridge, which is crucial for controlling the slope of the bridge and ensuring the comfort and safety of driving. The span constraint focuses on the extension of the bridge in the horizontal direction, which defines the total length of the bridge and the length distribution of each key section, which has an important influence on ensuring the stability and overall coordination of the bridge structure.

[0110] It can be understood that by binding the left and right amplitudes and the front and back span constraints of the guide line, the guide line can be parametrically driven, that is, the bridge deck guide line can be parametrically modeled to form a variety of parametric curve models, such as Figure 16 and Figure 17 As shown, Figure 16 This is a schematic diagram of the guide line amplitude constraint binding. Figure 17 Bind the diagram for the guide line span constraint.

[0111] It is worth noting that by adding amplitude guide line constraints to the overall bridge model, the overall bridge model and the deck guide line model are constrained and associated, forming a parametric spline curve driven overall bridge model, such as Figure 18 and Figure 19 As shown, Figure 18 This is a schematic diagram of the binding between the curved beam model and the guide line constraints. Figure 19 Update the schematic diagram for the curved beam model and guide lines.

[0112] Step S50: performing model loading matching based on the overall bridge model to generate an overall bridge parameterized model solution.

[0113] It should be noted that, as needed, various models that meet business needs can be constructed based on the overall bridge model to form a bridge model library for downstream business calls. During the design of the bridge span scheme, the bridge model library is called to load and match the model to generate the overall parametric model scheme of the bridge.

[0114] In the specific implementation, after the overall parametric model scheme of the bridge is generated, the parameters such as the pier height of the overall parametric model scheme of the bridge are updated according to the ground line and control point information provided by the GIS system, and the parametric model scheme of the bridge integrated with the GIS environment is rendered and displayed.

[0115] It is worth noting that the main principle of the parametric modeling method for curved bridges based on BIM and GIS technology in this embodiment is: constructing a bridge model with high-order multi-dimensional curved beam segment units, then adding spline curves to constrain the bridge units, generating a spline-guided curved bridge model, modeling conventional bridges in straight line sections of the line in the GIS system, loading the spline-guided bridge model for the curved section, and matching the spline curve with the target design line shape of the GIS system. The parameterization drives the curved bridge model to update its parameters to form a bridge model that meets the design line shape, and together with the bridge model of the conventional straight line section, it constitutes a target bridge parametric model and is integrated with the GIS environment.

[0116] This embodiment provides a parametric modeling method for curved bridges based on BIM and GIS technology. This embodiment first decomposes the structure of the target curved bridge to obtain characteristic cross-sections and corresponding constraints of the contour components of different bridge segments; performs parametric modeling of the bridge segments based on the characteristic cross-sections and the constraints to obtain a bridge segment model; assembles the bridge segment models to obtain a curved beam BIM splicing model; constructs a spline curve model, and generates an overall bridge model based on the curved beam BIM splicing model and the spline curve model; performs model loading and matching based on the overall bridge model to generate an overall bridge parametric model solution, which can realize parametric driving and data linkage updating of complex bridge structures.

[0117] In summary, this embodiment constructs a bridge segment model by obtaining characteristic sections and constraints through structural decomposition of the target curved bridge, splices it into a curved beam BIM splicing model, and associates it with the spline curve model constraints to obtain an overall bridge model, and then performs model loading and matching to generate an overall parametric model solution for the bridge. This overcomes the current technical defect that it is difficult to achieve parametric drive and data linkage update for complex structures, and can achieve parametric drive and data linkage update for complex bridge structures.

[0118] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 20 , the step S50 further includes steps S501-S504:

[0119] Step S501: construct a bridge model library based on the overall bridge model.

[0120] It's important to note that the overall bridge models of the various bridges constructed are stored in a bridge model library for easy access and application. This library can contain models of various types of bridges, such as beam bridges, arch bridges, and suspension bridges, as well as models of bridges with different spans, materials, and construction methods. By building a bridge model library, you can significantly reduce the workload of repetitive modeling and improve design efficiency.

[0121] Step S502: Obtain the target line design position in the GIS system, and determine the bridge design range according to the target line design position.

[0122] It should be noted that during bridge design, the target design alignment refers to the specific direction and location of the bridge determined during the planning and design phases, while the bridge design scope refers to the area encompassed by the bridge structure, determined based on this alignment and taking into account topographic, geological, and hydrological conditions. The bridge design scope is determined based on the target design alignment and business rules, which include but are not limited to factors such as the bridge's length, width, height, and compatibility with the surrounding environment.

[0123] In practice, spatial analysis tools within the GIS system are used to perform a buffer analysis on the target design alignment to generate a preliminary boundary for the bridge design range. Buffer analysis involves defining one or more specific distance ranges based on the target design alignment to create a polygonal area surrounding the alignment. This area serves as the preliminary boundary for the bridge design.

[0124] Step S503: Design a bridge span scheme according to the bridge design range to obtain an initial bridge scheme.

[0125] It's important to note that during the bridge design process, span concept design refers to determining the bridge's structural form, span arrangement, and pier and abutment locations based on the specific conditions within the design scope. During the span concept design phase, span concept designs are performed for various alignments within the design scope to produce an initial bridge plan.

[0126] It can be understood that the initial bridge plan is obtained by designing the bridge span plan for the curved sections and straight sections within the design range of the bridge respectively.

[0127] Step S504: loading and matching a bridge model according to the initial bridge scheme and the bridge model library to obtain an overall parameterized model scheme of the bridge.

[0128] It should be noted that the bridge model library is a database containing bridge models of various bridge types. During the bridge design process, the bridge model library can be used to quickly find a bridge model that matches the initial bridge plan.

[0129] In a feasible implementation, step S504 may include: determining the span scheme of the curved section and the span scheme of the straight section within the design range of the bridge based on the initial bridge scheme; loading and matching the curved section bridge scheme model based on the span scheme of the curved section and the bridge model library to obtain a curved section bridge parametric model; loading a conventional bridge parametric model based on the span scheme of the straight section to obtain a straight section bridge parametric model; generating an overall bridge parametric model scheme based on the curved section bridge parametric model and the straight section bridge parametric model.

[0130] It should be noted that the initial scheme of the bridge includes the bridge span scheme of the curve section and the bridge span scheme of the straight section in the bridge design range, and the overall parameterized model scheme of the bridge is formed on the basis of the parameterized model of the curve section and the straight section.

[0131] It can be understood that the bridge span scheme of the straight section is loaded by the conventional bridge parameterized model through the GIS system, and the bridge span scheme of the curve section needs to call the bridge model in the bridge model library for matching to obtain the curve section bridge parameterized model, as shown in Figure 21 and Figure 22 , Figure 21 is a schematic view of the bridge parameterized model of the straight section, Figure 22 is a schematic view of the bridge parameterized model of the curve section.

[0132] In a feasible implementation, the curve section bridge scheme model loading matching according to the bridge span scheme of the curve section and the bridge model library to obtain the curve section bridge parameterized model includes: matching the bridge model library according to the bridge span scheme of the curve section to obtain a to-be-loaded model; obtaining curve parameters of the curve section and transferring the curve parameters to a guide curve of the to-be-loaded model to obtain a new guide curve; and matching and coinciding the new guide curve with the curve section to obtain the curve section bridge parameterized model.

[0133] It should be noted that according to the bridge span scheme of the curve section, a corresponding bridge model is selected from the bridge model library for loading, and the curve parameters of the section are transferred to the guide curve of the loaded model, and then the guide curve is matched and coincided with the curve section of the target design line position as a loading reference to complete the bridge model positioning and form the overall parameterized model scheme of the bridge. As shown in Figure 23 , Figure 23 is a schematic view of the curve section bridge scheme model matching. According to the ground line and control point information provided by the GIS system, the pier height and other parameters of the overall parameterized model scheme of the bridge are updated to form a bridge parameterized model scheme fused with the GIS environment for rendering and display, as shown in Figure 24 , Figure 24 is a schematic view of the bridge parameterized model scheme.

[0134] It is understandable that for bridge span schemes that do not meet the requirements for crossing control point obstacles, a third-party intelligent span layout software is called to generate a new bridge span scheme, and the above steps of determining the bridge span scheme for the curved section and the bridge span scheme for the straight section within the bridge design range based on the initial bridge scheme are repeated to generate a new bridge span scheme parametric model and render it. The bridge span scheme parameterization association update includes the initial scheme parameter setting, updating the curved beam height based on the project scheme parameters, updating the curved beam span based on the project scheme parameters, and updating the curved beam amplitude based on the project scheme parameters. Figure 25 to Figure 28 As shown, Figure 25 This is a diagram of the initial scheme parameter settings. Figure 26 To update the curved beam height diagram based on the project plan parameters, Figure 27 To update the curved beam span diagram based on the project solution parameters, Figure 28 Update the curved beam amplitude diagram based on project proposal parameters.

[0135] It is worth noting that in this embodiment, the traditional BIM straight beam segments are set with parameters in multiple dimensions such as span, height, and amplitude, so that they can adapt to the curve modeling of bridges in complex terrain in the GIS environment. By calling and linking parameterized updates, the rendering performance of the BIM model in the GIS system can be further improved. At the same time, it can be applied to various application scenarios such as cross-section heightening, widthening, structural thickness, and line curves. It has a high degree of freedom and a large market application space.

[0136] In this embodiment, by constructing a bridge model library and calling the bridge model in the bridge model library according to the initial bridge plan and loading and matching, and then generating an overall parametric model plan of the bridge, the efficiency of parametric modeling of complex curved bridges can be effectively improved.

[0137] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the parametric modeling method of curved bridges based on BIM and GIS technology in the present application. More forms of simple transformations based on this technical concept are all within the scope of protection of the present application.

[0138] This application also provides a curved bridge parametric modeling device based on BIM and GIS technology, please refer to Figure 29 The curved bridge parametric modeling device based on BIM and GIS technology includes:

[0139] The decomposition module 10 is used to perform structural decomposition on the target curved bridge to obtain characteristic cross sections of the profile components of different bridge segments and corresponding constraint conditions.

[0140] The modeling module 20 is used to perform parametric modeling of the bridge segment according to the characteristic cross-section and the constraint conditions to obtain a bridge segment model.

[0141] The assembly module 30 is used to assemble according to the bridge segment model to obtain a curved beam BIM splicing model.

[0142] The generation module 40 is used to construct a spline curve model and generate an overall bridge model based on the curved beam BIM splicing model and the spline curve model.

[0143] The matching module 50 is used to perform model loading matching based on the overall bridge model to generate an overall bridge parameterized model solution.

[0144] This embodiment provides a parametric modeling device for curved bridges based on BIM and GIS technology. This embodiment first decomposes the structure of the target curved bridge to obtain characteristic cross-sections and corresponding constraints of the contour components of different bridge segments; performs parametric modeling of the bridge segments according to the characteristic cross-sections and the constraints to obtain a bridge segment model; assembles the bridge segment models to obtain a curved beam BIM splicing model; constructs a spline curve model, and generates an overall bridge model based on the curved beam BIM splicing model and the spline curve model; performs model loading and matching based on the overall bridge model to generate an overall bridge parametric model solution, which can realize parametric driving and data linkage update of complex bridge structures.

[0145] In summary, this embodiment constructs a bridge segment model by obtaining characteristic sections and constraints through structural decomposition of the target curved bridge, splices it into a curved beam BIM splicing model, and associates it with the spline curve model constraints to obtain an overall bridge model, and then performs model loading and matching to generate an overall parametric model solution for the bridge. This overcomes the current technical defect that it is difficult to achieve parametric drive and data linkage update for complex structures, and can achieve parametric drive and data linkage update for complex bridge structures.

[0146] Optionally, the decomposition module 10 is also used to obtain the bridge structural characteristics and construction methods of the target curved bridge; the target curved bridge is structurally decomposed according to the bridge structural characteristics and the construction methods to obtain the characteristic cross-sections of the contour components of different bridge segments and the corresponding constraints.

[0147] Optionally, the assembly module 30 is further configured to obtain reference lines of each bridge segment; perform multi-section binding on the contour components in the bridge segment model according to the span direction constraints of the reference lines to obtain a curved beam BIM splicing model.

[0148] Optionally, the generation module 40 is also used to obtain the amplitude constraint and span constraint of the bridge deck guide line; parameter-drive the bridge deck guide line through the amplitude constraint and span constraint to generate a spline curve model; and constrain the curved beam BIM splicing model and the spline curve model to generate an overall bridge model.

[0149] Optionally, the matching module 50 is further used to construct a bridge model library based on the overall bridge model; obtain the target line design line position in the GIS system, and determine the bridge design range based on the target line design line position; design a bridge span scheme based on the bridge design range to obtain an initial bridge scheme; load and match the bridge model based on the initial bridge scheme and the bridge model library to obtain an overall parametric model scheme of the bridge.

[0150] Optionally, the matching module 50 is also used to determine the span scheme of the curved section and the span scheme of the straight section within the design range of the bridge based on the initial bridge scheme; load and match the curved section bridge scheme model based on the span scheme of the curved section and the bridge model library to obtain a parametric model of the curved section bridge; load a conventional bridge parametric model based on the span scheme of the straight section to obtain a parametric model of the straight section bridge; and generate an overall parametric model scheme of the bridge based on the curved section bridge parametric model and the straight section bridge parametric model.

[0151] Optionally, the matching module 50 is also used to match the bridge model library according to the bridge span scheme of the curved section to obtain the model to be loaded; obtain the curve parameters of the curved section, and pass the curve parameters to the guide curve of the model to be loaded to obtain a new guide curve; match and overlap the new guide curve with the curved section to obtain a parametric model of the curved section bridge.

[0152] The parametric modeling device for curved bridges based on BIM and GIS technology provided in this application adopts the parametric modeling method for curved bridges based on BIM and GIS technology in the above-mentioned embodiment, which can solve the technical problem of how to achieve parametric drive and data linkage update of complex bridge structures. Compared with the existing technology, the beneficial effects of the parametric modeling device for curved bridges based on BIM and GIS technology provided in this application are the same as the beneficial effects of the parametric modeling method for curved bridges based on BIM and GIS technology provided in the above-mentioned embodiment, and the other technical features of the parametric modeling device for curved bridges based on BIM and GIS technology are the same as the features disclosed in the above-mentioned embodiment method, and are not further described here.

[0153] The present application provides a parametric modeling device for curved bridges based on BIM and GIS technologies. The parametric modeling device for curved bridges based on BIM and GIS technologies includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the parametric modeling method for curved bridges based on BIM and GIS technologies in the above-mentioned embodiment one.

[0154] Reference below Figure 30 , which shows a schematic structural diagram of a curved bridge parametric modeling device based on BIM and GIS technology suitable for implementing the embodiments of the present application. The curved bridge parametric modeling device based on BIM and GIS technology in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (e.g., vehicle-mounted navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 30 The curved bridge parametric modeling device based on BIM and GIS technology shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0155] like Figure 30 As shown, the curved bridge parametric modeling device based on BIM and GIS technology may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. RAM 1004 also stores various programs and data required for the operation of the curved bridge parametric modeling device based on BIM and GIS technology. Processing device 1001, ROM 1002, and RAM 1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the BIM and GIS-based curved bridge parametric modeling device to communicate wirelessly or wired with other devices to exchange data. While the figure shows a BIM and GIS-based curved bridge parametric modeling device with various systems, it should be understood that implementation or presence of all the illustrated systems is not required. More or fewer systems may alternatively be implemented or present.

[0156] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0157] The BIM- and GIS-based parametric modeling device for curved bridges provided in this application employs the BIM- and GIS-based parametric modeling method for curved bridges in the aforementioned embodiment, solving the technical problem of achieving parametric drive and data linkage updates for complex bridge structures. Compared to the prior art, the beneficial effects of the BIM- and GIS-based parametric modeling device for curved bridges provided in this application are the same as those of the BIM- and GIS-based parametric modeling method for curved bridges provided in the aforementioned embodiment. Other technical features of the BIM- and GIS-based parametric modeling device for curved bridges are the same as those disclosed in the aforementioned embodiment and are not further elaborated upon here.

[0158] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0159] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0160] The present application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, and the computer-readable program instructions are used to execute the parametric modeling method of curved bridges based on BIM and GIS technology in the above-mentioned embodiment.

[0161] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0162] The above-mentioned computer-readable storage medium can be included in the curved bridge parametric modeling device based on BIM and GIS technology; or it can exist independently without being assembled into the curved bridge parametric modeling device based on BIM and GIS technology.

[0163] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the curved bridge parametric modeling device based on BIM and GIS technology, the curved bridge parametric modeling device based on BIM and GIS technology: performs structural decomposition on the target curved bridge to obtain the characteristic cross-sections and corresponding constraints of the contour components of different bridge segments; performs parametric modeling of the bridge segments according to the characteristic cross-sections and the constraints to obtain a bridge segment model; assembles according to the bridge segment models to obtain a curved beam BIM splicing model; constructs a spline curve model, and generates an overall bridge model according to the curved beam BIM splicing model and the spline curve model; performs model loading and matching based on the overall bridge model to generate an overall bridge parametric model solution.

[0164] Computer program code for performing the operations of the present application may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0165] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0166] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0167] The computer-readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned BIM- and GIS-based parametric modeling method for curved bridges. This computer-readable storage medium addresses the technical problem of achieving parametric drive and data linkage updates for complex bridge structures. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the BIM- and GIS-based parametric modeling method for curved bridges provided in the aforementioned embodiments, and are not further elaborated here.

[0168] The application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the curve bridge parameterized modeling method based on BIM and GIS technology as described above.

[0169] The computer program product provided by the application can solve the technical problem of how to realize the parameterized driving and data linkage updating of complex bridge structures. Compared with the prior art, the beneficial effects of the computer program product provided by the application are the same as those of the curve bridge parameterized modeling method based on BIM and GIS technology provided by the above-mentioned embodiments, and are not described here.

[0170] The above only describes some embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or direct / indirect application in other related technical fields based on the technical concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A parametric modeling method for curved bridges based on BIM and GIS technology, characterized in that: The method comprises: Perform structural decomposition on the target curved bridge to obtain the characteristic cross-sections of the profile components of different bridge segments and the corresponding constraints; Performing parametric modeling of the bridge segment according to the characteristic cross section and the constraint conditions to obtain a bridge segment model; Assemble according to the bridge segment model to obtain a curved beam BIM splicing model; Constructing a spline curve model, and generating an overall bridge model based on the curved beam BIM splicing model and the spline curve model; Building a bridge model library according to the overall bridge model; Obtaining the target line design position in the GIS system, and determining the bridge design range based on the target line design position; Design a bridge span scheme according to the bridge design scope to obtain an initial bridge scheme; Determining a span scheme for a curved section and a span scheme for a straight section within a design range of the bridge based on the initial bridge scheme; Matching the bridge model library according to the bridge span scheme of the curved section to obtain a model to be loaded; Acquiring curve parameters of the curve segment, and transferring the curve parameters to the guide curve of the model to be loaded to obtain a new guide curve; Matching and overlapping the new guide curve with the curve section to obtain a parameterized model of the curve section bridge; According to the bridge span scheme of the straight section, the conventional bridge parametric model is loaded to obtain the straight section bridge parametric model; A bridge overall parameterized model solution is generated according to the curved section bridge parameterized model and the straight section bridge parameterized model.

2. The method according to claim 1, wherein The structural decomposition of the target curved bridge is performed to obtain characteristic cross-sections of profile components of different bridge segments and corresponding constraints, including: Obtain the bridge structure characteristics and construction methods of the target curved bridge; The target curved bridge is structurally decomposed according to the bridge structural characteristics and the construction method to obtain characteristic cross-sections of profile components of different bridge segments and corresponding constraint conditions.

3. The method according to claim 1, wherein The bridge segment model is assembled to obtain a curved beam BIM splicing model, including Obtain reference lines for each bridge segment; Multi-section binding is performed on the contour components in the bridge segment model according to the span direction constraint of the reference line to obtain a curved beam BIM splicing model.

4. The method according to claim 1, wherein The spline curve model is constructed, and the overall bridge model is generated according to the curved beam BIM splicing model and the spline curve model, including Obtain the amplitude constraint and span constraint of the bridge deck guide line; The bridge deck guide line is parameter-driven by the amplitude constraint and the span constraint to generate a spline curve model; The curved beam BIM splicing model and the spline curve model are constrained and associated to generate an overall bridge model.

5. A parametric modeling device for curved bridges based on BIM and GIS technology, characterized in that: The parametric modeling method for a curved bridge based on BIM and GIS technology according to any one of claims 1 to 4 is performed on the parametric modeling device for a curved bridge based on BIM and GIS technology, and the parametric modeling device for a curved bridge based on BIM and GIS technology comprises: Decomposition module, used to decompose the target curved bridge structure to obtain the characteristic cross-sections of the profile components of different bridge segments and the corresponding constraints; A modeling module, configured to perform parametric modeling of a bridge segment according to the characteristic cross-section and the constraint conditions to obtain a bridge segment model; An assembly module, used for assembling according to the bridge segment model to obtain a curved beam BIM splicing model; A generation module is used to construct a spline curve model and generate an overall bridge model based on the curved beam BIM splicing model and the spline curve model; The matching module is used to perform model loading matching based on the overall bridge model to generate an overall bridge parameterized model solution.

6. A parametric modeling device for curved bridges based on BIM and GIS technology, characterized in that: The curved bridge parametric modeling device based on BIM and GIS technology includes: a memory, a processor, and a curved bridge parametric modeling program based on BIM and GIS technology stored in the memory and executable on the processor. The curved bridge parametric modeling program based on BIM and GIS technology is configured to implement the curved bridge parametric modeling method based on BIM and GIS technology as described in any one of claims 1 to 4.

7. A storage medium, characterized in that: The storage medium stores a parametric modeling program for curved bridges based on BIM and GIS technology. When the parametric modeling program for curved bridges based on BIM and GIS technology is executed by a processor, the parametric modeling method for curved bridges based on BIM and GIS technology as described in any one of claims 1 to 4 is implemented.

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