Curve bridge parametric modeling method based on BIM and GIS technologies

Abstract

The invention relates to the technical field of bridge parametric modeling, and discloses a curved bridge parametric modeling method based on BIM and GIS technologies, and the method comprises the steps: carrying out the structural decomposition of a target curved bridge, and obtaining the feature sections of contour members of different bridge segments and corresponding constraint conditions; performing bridge segment parametric modeling according to the characteristic cross section and the constraint condition to obtain a bridge segment model; splicing is conducted according to the bridge segment model, and a curved beam BIM splicing model is obtained; constructing a spline curve model, and generating a bridge overall model according to the curved beam BIM splicing model and the spline curve model; and carrying out model loading matching based on the overall bridge model to generate an overall parameterized bridge model scheme. According to the invention, parameterized driving and data linkage updating of a complex bridge structure can be realized.

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 based on various relevant information data of construction projects. It simulates the real information of buildings through digital information simulation. It runs through the entire process of the project from design, construction to operation, and provides a platform for project parties 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 mainly used to provide macro-geographic environment information, such as terrain, landforms, water systems, etc.

[0003] In order to make the bridge BIM model more compatible with the project and more applicable. By building a bridge BIM model and loading it into the GIS environment, BIM+GIS technology can be integrated with each other. The geospatial data provided by GIS can provide a more comprehensive background for the BIM model, which can show the relationship between the bridge and the surrounding environment. Through parametric adaptation, the built bridge model is highly restored to the real geographical environment, improving design efficiency, and also providing a visual evaluation plan for the project. It helps designers improve production efficiency, discover problems in the design earlier, and optimize and modify them in time, improve communication efficiency and information sharing. By combining the parametric information in the BIM model with the geographic data in the GIS environment, the monitoring and maintenance of the building can be improved, and the efficiency of facility management can be improved. Combining the 3D model of BIM and the spatial analysis of GIS, users can better understand the spatial impact of the project, such as the surrounding environment, traffic flow, etc. For the construction of smart cities, the combination of BIM+GIS is the foundation, which can support data-driven decision-making and achieve more efficient management and services for bridge projects.

[0004] To date, the existing BIM model and GIS environment are not well matched. 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, and arch bridges. In the GIS environment, many factors need to be considered, including topography, geology, hydrology, and traffic flow. 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 the bridge project as an example, the traditional bridge parametric BIM model is currently applied to the GIS system to achieve the parametric drive and data linkage update technology of the bridge plan. However, as the difficulty of the project increases, various departments have tightened the review of the plan. For complex structures, such as curved beams and high-order curved beams, due to the particularity and complexity of the structural plan, the existing technology is still difficult to achieve parametric drive and data linkage update.

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

[0007] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are 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 according to 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 constraint conditions 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 reference lines of each bridge segment;

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

[0020] In one embodiment, the constructing of the spline curve model and generating the overall bridge model according to 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, the performing model loading matching based on the overall bridge model to generate an overall bridge parameterized model scheme 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 according to 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 parameterized model scheme of the bridge includes:

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

[0031] According to the bridge span scheme of the curved section and the bridge model library, a curved section bridge scheme model is loaded and matched 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 curve section to obtain a model to be loaded;

[0036] Acquiring curve parameters of the curve section, 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 purpose, the present application also proposes a curved bridge parametric modeling device based on BIM and GIS technology, and the curved bridge parametric modeling device based on BIM and GIS technology includes:

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

[0040] A modeling module, used for performing parametric modeling of a bridge segment according to the characteristic cross section and the constraint conditions to obtain a bridge segment model;

[0041] An assembly module, used for assembling according to the bridge segment model to obtain a curved beam BIM splicing model;

[0042] A generation module, used to construct a spline curve model, and generate an overall bridge model according to the curved beam BIM splicing model and the spline curve model;

[0043] The matching module is used to perform model loading matching based on the overall bridge model to generate an overall bridge parameterized model solution.

[0044] In addition, to achieve the above-mentioned objectives, the present application also proposes a parametric modeling device for curved bridges based on BIM and GIS technology, the device comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the parametric modeling method for curved bridges based on BIM and GIS technology as described above.

[0045] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the parametric modeling method of curved bridges based on BIM and GIS technology as described above are implemented.

[0046] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the parametric modeling method of curved bridges based on BIM and GIS technology as described above.

[0047] The present application provides a parametric modeling method for curved bridges based on BIM and GIS technology. The present application first decomposes the structure of the target curved bridge to obtain the characteristic cross-sections of the contour components of different bridge segments and the corresponding constraints; 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 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, which can realize parametric driving and data linkage updating of complex bridge structures.

[0048] In summary, the present 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, overcoming the current technical defects of difficulty in realizing parametric drive and data linkage update for complex structures, and can realize parametric drive and data linkage update of 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0051] Figure 1 A flow chart of Embodiment 1 of the method for parameterized modeling of 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 curved beam profile section constraint relationship provided in Example 1 of the curved bridge parametric modeling method 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 height constraint binding of a curved beam cantilevered variable height section provided in Example 1 of a method for parameterized modeling of a curved bridge based on BIM and GIS technology in this application;

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

[0058] Figure 8 A schematic diagram of the height 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;

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

[0060] Fig.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] Fig.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] Fig.12 A schematic diagram of a high-order curved bridge BIM model provided in Embodiment 1 of the method for parameterized modeling of curved bridges based on BIM and GIS technology of this application;

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

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

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

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

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

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

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

[0070] Fig. 20 A flow chart of Embodiment 2 of the method for parameterized modeling of curved bridges based on BIM and GIS technology provided in this application;

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

[0072] Fig. 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] Fig.23 A schematic diagram of matching the curved bridge scheme model provided in Example 2 of the curved bridge parametric modeling method based on BIM and GIS technology of this application;

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

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

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

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

[0078] Fig.28 A schematic diagram of updating the curved beam amplitude based on project solution parameters provided in Example 2 of the method for parameterizing curved bridges based on BIM and GIS technology of this application;

[0079] Fig.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] Fig.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 described 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 only used to explain the technical solutions of the present application and are not used 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: to decompose the structure of the target curved bridge to obtain the characteristic cross-sections of the contour components of different bridge segments and the corresponding constraints; to perform parametric modeling of the bridge segments according to the characteristic cross-sections and the constraints to obtain a bridge segment model; to assemble the bridge segment models to obtain a curved beam BIM splicing model; to construct a spline curve model, and to generate an overall bridge model according to the curved beam BIM splicing model and the spline curve model; to perform model loading and matching based on the overall bridge model to generate an overall bridge parametric model solution.

[0085] Taking the bridge project as an example, the technology of applying the traditional bridge parametric BIM model to the GIS system to realize the parametric drive and data linkage update of the bridge scheme has matured. However, as the difficulty of the project increases, various departments have tightened the review of the scheme. For complex structures, such as curved beams and high-order curved beams, the existing technology is still difficult to realize parametric drive and data linkage update due to the particularity and complexity of the structural scheme. Therefore, how to realize the parametric drive and data linkage update of complex bridge structures is a problem that needs to be solved urgently.

[0086] This application constructs a bridge segment model by obtaining characteristic cross-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 defects of difficulty in achieving 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 can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a curved bridge parametric modeling device based on BIM and GIS technology, etc. The following takes the curved bridge parametric modeling device based on BIM and GIS technology as an example to illustrate this embodiment and the following embodiments.

[0088] Based on this, the embodiment of the present application provides a parametric modeling method for curved bridges based on BIM and GIS technology. 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 curved bridge parametric modeling method 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 takes a three-span continuous beam as an example for explanation. 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. Different sections are picked up, the section profile components are loaded, and the corresponding constraints are set, and multiple sections can be quickly generated. 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 implementation, step S10 may include: obtaining the bridge structure characteristics and construction method of the target curved bridge; structurally decomposing the target curved bridge according to the bridge structure 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, the size of components, etc. The construction method involves the technology and techniques used in the construction of the bridge, including the construction technology, construction sequence, and construction equipment of the bridge, which are not specifically limited in this embodiment.

[0095] It can be understood that the structure is decomposed according to the structural characteristics and construction methods of the bridge, and the characteristic cross-section and constraint relationship 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 geometric shape, size, and material properties of the bridge segment through programming languages ​​or graphical interfaces according to the characteristic cross-section and constraints of the bridge segment, thereby generating a three-dimensional model of the bridge segment. In this embodiment, software such as Revit and ArchiCAD in BIM technology can be used for parametric modeling. By defining parametric rules and constraints, a three-dimensional model of the bridge segment can be quickly generated, and the accuracy and consistency of the model can be ensured.

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

[0099] It is worth mentioning 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 segment, the amplitude constraint binding of the curved beam cantilevered height 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 Figures 4 to 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 cantilever cast height change 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 schematic diagram of the height constraint binding of the zero-number segment of the curved beam. Fig. 9 This is a schematic diagram of the amplitude constraint binding of the zero-number segment of the curved beam. Fig.10 Schematic diagram of parametric modeling of high-order curved beams.

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

[0101] It should be noted that the assembly process includes combining the BIM models of different bridge segments obtained by various parametric modeling according to the actual construction sequence and position, and it is necessary to consider the connection method between the 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 will be no conflict between the various components, and dynamic simulation 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, which 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 contour components in the bridge segment model according to span direction constraints of the reference lines to obtain a curved beam BIM splicing model.

[0103] It should be noted that the reference lines of each bridge segment define the relative position and direction of the bridge segment in space. The span direction constraint of the reference line ensures that each segment can be correctly docked during assembly, avoiding misalignment and angular deviation. In the multi-section binding process, the reference line serves as a benchmark, allowing the profile components to be accurately positioned and bound according to predetermined rules and constraints.

[0104] It can be understood that by modeling the side span section, cantilevered section, zero section, and closure section, the side span section BIM model, cantilevered section BIM model, zero section BIM model, and closure section BIM model are obtained. Combined with the span direction (X-axis) constraint of the reference line, multi-section binding is performed inside the component to generate multi-dimensional parametric drive, such as Fig.11 As shown, Fig.11 The overall span constraint binding diagram of the curved beam is shown in Figure 1. Finally, the curved beam BIM splicing model is completed. Figures 12 to 15 As shown, Fig.12 is a schematic diagram of the BIM model of a high-order curved bridge in this embodiment. Fig.13 This is a schematic diagram of the BIM splicing model of a high-order curved bridge. Fig.14 This is a schematic diagram of a traditional high-level bridge BIM model. Fig.15 This is a schematic diagram of the traditional high-order bridge BIM splicing model.

[0105] Step S40: construct a spline curve model, and generate an overall bridge 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 used to describe 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 line shape of the bridge.

[0107] It can be understood that the spline curve model is obtained by parametric modeling based on the bridge deck guide line, and constraint association is performed based on the curved beam BIM splicing model and the spline curve model to form an overall bridge model driven by a parametric spline curve.

[0108] In a feasible implementation, step S40 may include: obtaining the amplitude constraint and span constraint of the bridge deck guide line; parameter-driving the bridge deck guide line through the amplitude constraint and span constraint to generate a spline curve model; constraining and associating the curved beam BIM splicing model with the spline curve model to generate an overall bridge model.

[0109] It should be noted that the deck guide line is a series of key points pre-set in the bridge design, which define the curve direction of the bridge on the horizontal and vertical planes. The amplitude constraint of the deck guide line mainly limits the degree of change of the curve in the vertical direction, that is, the range of change of the height or depth of the bridge, which is crucial for controlling the slope of the bridge and ensuring driving comfort and safety. The span constraint focuses on the extension of the bridge in the horizontal direction, defining the total length of the bridge and the length distribution of each key section, which has an important impact 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 rear 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 Fig.16 and Fig.17 As shown, Fig.16 This is a schematic diagram of the guide line amplitude constraint binding. Fig.17 Schematic diagram for binding the span constraint of the guide line.

[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 to form a parametric spline curve driven overall bridge model, such as Fig.18 and Fig.19 As shown, Fig.18 This is a schematic diagram of the curved beam model and the guide line constraint binding. Fig.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 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. When designing a bridge span scheme, call the bridge model library for model loading and matching to generate an overall parametric model scheme for 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: construct a bridge model with high-order multi-dimensional curved beam segment units, then add spline curves to constrain the bridge units, generate a curved bridge model guided by spline curves, and model conventional bridges in straight line sections of the line in the GIS system. For curved sections, load the bridge model guided by spline curves, match the spline curves with the target design line shape of the GIS system, parameterize and drive the curved bridge model to update parameters, form a bridge model that meets the design line shape, and together with the bridge model of the conventional straight line section, form a target bridge parametric model and integrate it with the GIS environment.

[0116] The present embodiment provides a parametric modeling method for curved bridges based on BIM and GIS technology. The present embodiment first decomposes the structure of the target curved bridge to obtain characteristic cross-sections of contour components of different bridge segments and corresponding constraints; 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 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, 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 the overall bridge model, and then performs model loading and matching to generate an overall parametric model solution for the bridge, which 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-mentioned embodiment 1 can refer to the above introduction, and will not be repeated later. Fig. 20 , the step S50 further includes steps S501-S504:

[0119] Step S501: construct a bridge model library according to the overall bridge model.

[0120] It should be noted that the overall bridge models of different bridges are stored in the bridge model library for subsequent call and application. The bridge model library can contain various types of bridge models, such as beam bridges, arch bridges, suspension bridges, etc., as well as bridge models of different spans, different materials, and different construction methods. By building a bridge model library, the workload of repeated modeling can be greatly reduced and the design efficiency can be improved.

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

[0122] It should be noted that in the bridge design process, the target line design position refers to the specific direction and position of the bridge determined in the planning and design stage, while the bridge design scope refers to the area covered by the bridge structure determined on the basis of the line position according to the terrain, geology, hydrology and other conditions. The bridge design scope is determined according to the target line design position and business rules, which include but are not limited to factors such as the length, width, height of the bridge and its coordination with the surrounding environment.

[0123] In the specific implementation, the spatial analysis tools in the GIS system are used to perform buffer analysis on the target line design line position to generate the preliminary boundary of the bridge design range. Buffer analysis refers to setting one or more specific distance ranges based on the target line design line position to generate a polygonal area surrounding the line position, which will serve as the preliminary range of the bridge design.

[0124] Step S503, performing bridge span scheme design according to the bridge design range to obtain an initial bridge scheme.

[0125] It should be noted that in the bridge design process, the span scheme design refers to determining the structural form of the bridge, the span arrangement, and the location of the piers and abutments according to the specific conditions within the bridge design range. In the span scheme design stage, the span scheme design is carried out for different linear shapes within the bridge design range to obtain the initial bridge scheme.

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

[0127] Step S504: loading and matching the 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 according to the initial bridge scheme; loading and matching the curved section bridge scheme model according to 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 according to the span scheme of the straight section to obtain a straight section bridge parametric model; generating an overall bridge parametric model scheme according to the curved section bridge parametric model and the straight section bridge parametric model.

[0130] It should be noted that the initial bridge plan includes the span plan for the curved section and the span plan for the straight section within the design scope of the bridge, and the overall parametric model plan of the bridge is based on this, forming a complete bridge design model by integrating the parametric models of the curved section and the straight section.

[0131] It can be understood that for the bridge span scheme of the linear section, the conventional bridge parameterized model is loaded through the GIS system, while for the bridge span scheme of the curved section, the bridge model in the bridge model library needs to be called for matching to obtain the curved section bridge parameterized model, such as Fig.21 and Fig. 22 As shown, Fig.21 Schematic diagram of the parametric model of a bridge with straight segments. Fig. 22 Schematic diagram of the parametric model of a bridge with curved sections.

[0132] In a feasible implementation manner, the curve section bridge scheme model is loaded and matched according to the bridge span scheme of the curve section and the bridge model library to obtain a curve section bridge parametric model, including: matching the bridge model library according to the bridge span scheme of the curve section to obtain the model to be loaded; obtaining the curve parameters of the curve section, 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 curve section bridge parametric model.

[0133] It should be noted that according to the bridge span scheme of the curved section, the corresponding bridge model is selected in the bridge model library for loading, and the curve parameters of the section are passed to the guide curve of the loaded model. The guide curve is then used as a loading reference to match and overlap the curve segment of the target design line position to complete the positioning of the bridge model and form an overall parametric model scheme of the bridge. Fig.23 As shown, Fig.23 The figure is a schematic diagram of the matching model of the curved bridge scheme. According to the ground line and control point information provided by the GIS system, the pier height and other parameters of the overall parametric model scheme of the bridge are updated to form a bridge parametric model scheme integrated with the GIS environment for rendering and display, such as Fig.24 As shown, Fig.24 Schematic diagram of the bridge parametric model scheme.

[0134] It is understandable that for the span scheme that does not meet the requirements of crossing the control point obstacle, a third-party intelligent span layout software is called to generate a new span scheme, and the above steps of determining the span scheme of the curved section and the span scheme of the straight section within the bridge design range according to the initial bridge scheme are re-executed to generate a new span scheme parametric model and render it. The 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, such as Figure 25 to Figure 28 As shown, Fig.25 This is a schematic diagram of the initial scheme parameter settings. Fig.26 To update the curved beam height diagram based on the project proposal parameters, Fig. 27 To update the curved beam span diagram based on the project solution parameters, Fig.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 of 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 used in various application scenarios such as cross-section heightening, widthening, structure thickening, 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 parametric modeling efficiency 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 of 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 Fig.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 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 according to 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] The present embodiment provides a parametric modeling device for curved bridges based on BIM and GIS technology. The present embodiment first decomposes the structure of the target curved bridge to obtain characteristic cross-sections of contour components of different bridge segments and corresponding constraints; 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 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, which can realize parametric driving and data linkage updating 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 the overall bridge model, and then performs model loading and matching to generate an overall parametric model solution for the bridge, which 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 characteristic cross-sections of contour components of different bridge segments and corresponding constraints.

[0147] Optionally, the assembly module 30 is further used 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 also used to build 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 according to the initial bridge scheme; load and match the curved section bridge scheme model according to the span scheme of the curved section and the bridge model library to obtain a curved section bridge parametric model; load a conventional bridge parametric model according to the span scheme of the straight section to obtain a straight section bridge parametric model; generate an overall bridge parametric model scheme according to 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 parameterized model of the curved section bridge.

[0152] The curved bridge parametric modeling device based on BIM and GIS technology provided by the present application adopts the curved bridge parametric modeling method based on BIM and GIS technology in the above-mentioned embodiment, which can solve the technical problem of how to realize the parametric drive and data linkage update of complex bridge structures. Compared with the prior art, the beneficial effects of the curved bridge parametric modeling device based on BIM and GIS technology provided by the present application are the same as the beneficial effects of the curved bridge parametric modeling method based on BIM and GIS technology provided by the above-mentioned embodiment, and the other technical features in the curved bridge parametric modeling device based on BIM and GIS technology are the same as the features disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0153] The present application provides a curved bridge parametric modeling device based on BIM and GIS technology, and the curved bridge parametric modeling device based on BIM and GIS technology 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 curved bridge parametric modeling method based on BIM and GIS technology in the above-mentioned embodiment one.

[0154] Reference below Fig.30 , which shows a schematic diagram of the structure of a curved bridge parametric modeling device based on BIM and GIS technology suitable for implementing the embodiment of the present application. The curved bridge parametric modeling device based on BIM and GIS technology in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Fig.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 Fig.30 As shown, the curved bridge parametric modeling device based on BIM and GIS technology may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 to the random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the curved bridge parametric modeling device based on BIM and GIS technology are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 may allow the curved bridge parametric modeling device based on BIM and GIS technology to communicate wirelessly or wired with other devices to exchange data. Although the curved bridge parametric modeling device based on BIM and GIS technology with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0156] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a 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 through 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 curved bridge parametric modeling device based on BIM and GIS technology provided by the present application adopts the curved bridge parametric modeling method based on BIM and GIS technology in the above embodiment, which can solve the technical problem of how to realize the parametric drive and data linkage update of complex bridge structures. Compared with the prior art, the beneficial effects of the curved bridge parametric modeling device based on BIM and GIS technology provided by the present application are the same as the beneficial effects of the curved bridge parametric modeling method based on BIM and GIS technology provided by the above embodiment, and the other technical features in the curved bridge parametric modeling device based on BIM and GIS technology are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0158] It should be understood that the various parts disclosed in this application can be implemented by 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 is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0160] The present application provides a computer-readable storage medium having computer-readable program instructions (i.e., computer programs) 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 the present 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 of the above. 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 of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination 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 of the above.

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

[0163] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by a curved bridge parametric modeling device based on BIM and GIS technology, the curved bridge parametric modeling device based on BIM and GIS technology: decomposes the structure of the target curved bridge to obtain characteristic cross-sections and corresponding constraints of contour components of different bridge segments; performs parametric modeling of 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.

[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 separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of 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., via the Internet using an Internet service provider).

[0165] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the 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 square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square 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 square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0166] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0167] The readable storage medium provided in this application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned parametric modeling method for curved bridges based on BIM and GIS technology, and can solve the technical problem of how to realize the parametric drive and data linkage update of complex bridge structures. Compared with the prior art, the beneficial effects of the computer-readable storage medium 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 will not be repeated here.

[0168] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for parametric modeling of curved bridges based on BIM and GIS technology.

[0169] The computer program product provided by this application can solve the technical problem of how to realize the parametric drive and data linkage update of complex bridge structures. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as the beneficial effects of the parametric modeling method for curved bridges based on BIM and GIS technology provided by the above embodiment, which will not be repeated here.

[0170] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present 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 according to the curved beam BIM splicing model and the spline curve model; Model loading matching is performed based on the overall bridge model to generate an overall bridge parameterized model solution.

2. The method according to claim 1, characterized in that The structural decomposition of the target curved bridge is performed to obtain characteristic cross sections of profile components of different bridge segments and corresponding constraint conditions, 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, characterized in that The bridge segment model is assembled to obtain a curved beam BIM splicing model, including Obtain reference lines for each bridge segment; According to the span direction constraint of the reference line, multi-section binding is performed on the contour components in the bridge segment model to obtain a curved beam BIM splicing model.

4. The method according to claim 1, characterized in that 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. The method according to claim 1, characterized in that The performing model loading matching based on the overall bridge model to generate an overall bridge parameterized model scheme includes: 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 according to the target line design position; Design a bridge span scheme according to the bridge design scope to obtain an initial bridge scheme; 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.

6. The method according to claim 5, characterized in that The loading and matching of the bridge model according to the initial bridge scheme and the bridge model library to obtain the overall parameterized model scheme of the bridge includes: Determining a bridge span scheme for a curved section and a bridge span scheme for a straight section within a design range of the bridge according to the initial bridge scheme; According to the bridge span scheme of the curved section and the bridge model library, a curved section bridge scheme model is loaded and matched to obtain a curved section bridge parameterized model; 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.

7. The method according to claim 6, characterized in that The method of 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 the curved section bridge parameterized model includes: Matching the bridge model library according to the bridge span scheme of the curve section to obtain a model to be loaded; Acquiring curve parameters of the curve section, and transferring the curve parameters to the guide curve of the model to be loaded to obtain a new guide curve; The new guide curve is matched and overlapped with the curve section to obtain a parameterized model of the curve section bridge.

8. 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 decomposition module is used to decompose the structure of the target curved bridge to obtain the characteristic cross-sections of the profile components of different bridge segments and the corresponding constraints; A modeling module, used for performing 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, used to construct a spline curve model, and generate an overall bridge model according to 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.

9. 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 7.

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

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