New energy wind power plant transportation road three-dimensional parametric modeling method and system

Abstract

The invention discloses a new energy wind power plant transportation road three-dimensional parametric modeling method, which comprises the following steps of S1, obtaining wind power plant topographic data, and generating a digital elevation model; s2, parameterization definition is carried out on the transportation road of the wind power plant, a road design parameter set is obtained, and the road design parameter set comprises a horizontal curve parameter used for defining the plane line shape of the road, a vertical curve parameter used for defining the longitudinal line shape of the road and a cross section parameter used for defining the cross section structure of the road; and S3, based on the digital elevation model and the road design parameter set, generating a road three-dimensional entity model matched with the terrain through a fitting algorithm. By establishing the parameterized three-dimensional modeling method and system, road design is improved from two dimensions to three dimensions, the scheme is made to be precisely attached to the complex terrain, and design errors and construction changes are reduced; and meanwhile, a digital process from design to result output is opened, the efficiency is improved, and reliable support is provided for project quality, cost and construction period control.

Description

A 3D parametric modeling method and system for transportation roads in new energy wind farms Technical Field

[0001] This invention relates to the field of information technology in civil engineering, and more specifically, to a three-dimensional parametric modeling method and system for transportation roads in new energy wind farms. Background Technology

[0002] Traditional wind farm transportation road design relies primarily on two-dimensional drawings, which struggle to accurately reflect the three-dimensional spatial characteristics of complex mountainous terrain, leading to significant discrepancies between the design and actual terrain conditions. This design approach fails to effectively anticipate potential terrain conflicts during construction, often resulting in frequent design changes and high rework rates.

[0003] Existing design processes often lack unified data standards and technical frameworks. Road alignment design, structural design, and quantity calculations are often disconnected, hindering the effective flow and sharing of information across design stages and creating significant information barriers. This not only reduces design efficiency but also impacts interdisciplinary collaboration.

[0004] Furthermore, conventional methods are insufficient in areas such as scheme comparison and selection, accurate quantity calculation, and digital integration of design and construction, making it difficult to support the refined requirements of wind farm construction projects for efficiency, cost, and schedule control. Therefore, there is an urgent need for a new technical solution that can integrate terrain data, drive 3D visualization design, and achieve information connectivity. Summary of the Invention

[0005] To address the aforementioned technical problems in related technologies, this invention proposes a three-dimensional parametric modeling method and system for transportation roads in new energy wind farms, which can overcome the above-mentioned shortcomings of existing technologies.

[0006] To achieve the above technical objectives, the technical solution of the present invention is as follows: a three-dimensional parametric modeling method for transportation roads in new energy wind farms; the three-dimensional parametric modeling method for transportation roads in new energy wind farms includes the following steps: S1, acquiring wind farm topographic data and generating a digital elevation model; S2, parametrically defining the transportation roads of the wind farm to obtain a road design parameter set, the road design parameter set including horizontal curve parameters for defining the road's horizontal alignment, vertical curve parameters for defining the road's longitudinal alignment, and cross-sectional parameters for defining the road's cross-sectional structure; S3, based on the digital elevation model and the road design parameter set, generating a three-dimensional solid model of the road that adapts to the terrain through a fitting algorithm.

[0007] Furthermore, the horizontal curve parameters mentioned in S2 include at least one of the following: intersection point, straight-to-curve point, curve-to-round point, midpoint of curve, curve-to-curve point, and curve-to-straight point; the vertical curve parameters include at least one of the following: vertical curve radius, tangent length, vertical curve length, and outer distance; the cross-sectional parameters include mileage, roadbed width, and slope ratio.

[0008] Further, step S3 specifically includes: S301, performing planar alignment fitting based on the horizontal curve parameters to determine the planar position of the road centerline; S302, performing longitudinal profile fitting based on the vertical curve parameters, and determining the elevation of each point on the road centerline in conjunction with the digital elevation model; S303, generating a cross-section template based on the cross-section parameters; S304, positioning and stretching the cross-section template along the road centerline with the determined planar position and elevation to generate the three-dimensional solid model of the road.

[0009] Furthermore, the planar line fitting includes fitting straight line segments, circular curve segments, and transition curve segments; the longitudinal profile fitting is based on the quadratic parabola equation.

[0010] Furthermore, after step S3, step S4 is also included: performing Boolean operations and difference calculations based on the three-dimensional solid model of the road and the digital elevation model to determine the engineering quantity of the road project; the engineering quantity includes at least one of earthwork volume, pavement area and structure volume.

[0011] Furthermore, it also includes step S5: based on the road three-dimensional solid model, automatically generate at least one of the following results: construction drawings, bill of quantities, and BIM model files.

[0012] According to another aspect of the present invention, a three-dimensional parametric modeling system for transportation roads in new energy wind farms is provided. This system includes: a data acquisition and processing module for acquiring wind farm terrain data and generating a digital elevation model; a parametric design module for parametrically defining the transportation roads to output a road design parameter set, the road design parameter set including horizontal curve parameters, vertical curve parameters, and cross-sectional parameters; and a three-dimensional modeling engine module for running a fitting algorithm based on the digital elevation model and the road design parameter set to generate a three-dimensional solid model of the road adapted to the terrain.

[0013] Furthermore, the 3D modeling engine module includes a line fitting unit and a cross-section processing unit; the line fitting unit is used to perform planar line fitting and longitudinal section fitting respectively based on the horizontal curve parameters and vertical curve parameters to determine the 3D spatial trajectory of the road centerline; the cross-section processing unit is used to generate a cross-section template based on the cross-section parameters, and control the cross-section template to be lofted along the 3D spatial trajectory of the road centerline to construct the 3D solid model of the road.

[0014] Furthermore, it also includes an engineering quantity calculation module, used to calculate at least one of the following engineering quantities for road engineering: earthwork volume, pavement area, and structure volume, based on the road three-dimensional solid model and the digital elevation model.

[0015] Furthermore, it also includes a result output module, which is used to drive the generation of at least one of the following results based on the road 3D solid model: construction drawings, bill of quantities, and BIM model files.

[0016] The beneficial effects of this invention are as follows: By establishing a parametric road 3D modeling method and system, the design of transportation roads has been upgraded from a two-dimensional plane to a three-dimensional space, enabling the design scheme to accurately fit complex mountainous terrain and significantly reducing construction changes and rework caused by design errors. Furthermore, it has streamlined the digital process from design and engineering quantity calculation to output, improving design efficiency and collaboration capabilities, and providing reliable technical support for the overall quality, cost, and schedule control of wind farm construction projects. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a schematic diagram of a horizontal curve of a road according to the present invention; Figure 2 is a schematic diagram of a vertical curve of a road according to the present invention; Figure 3 is a schematic diagram of a typical cross-section of a road according to the present invention; Figure 4 is a schematic diagram of key control points of a horizontal curve according to the present invention; Figure 5 is a schematic diagram of key parameters of a vertical curve according to the present invention; Figure 6 is a schematic diagram of the definition of cross-section parameters according to the present invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As shown in the figure, a three-dimensional parametric modeling method for transportation roads in a new energy wind farm according to an embodiment of the present invention includes the following steps: S1, acquiring wind farm topographic data and generating a digital elevation model; S2, parametrically defining the transportation roads of the wind farm to obtain a road design parameter set, wherein the road design parameter set includes horizontal curve parameters for defining the road's horizontal alignment, vertical curve parameters for defining the road's longitudinal alignment, and cross-sectional parameters for defining the road's cross-sectional structure; S3, based on the digital elevation model and the road design parameter set, generating a three-dimensional solid model of the road that adapts to the terrain using a fitting algorithm.

[0021] According to an embodiment of the present invention, a three-dimensional parametric modeling method for transportation roads in a new energy wind farm is provided. In a specific embodiment, the horizontal curve parameters in S2 include at least one of the following: intersection point, straight-to-curve point, curve-to-round point, midpoint of curve, round-to-curve point, and curve-to-straight point; the vertical curve parameters include at least one of the following: vertical curve radius, tangent length, vertical curve length, and outer distance; and the cross-sectional parameters include mileage, roadbed width, and slope ratio.

[0022] According to an embodiment of the present invention, a three-dimensional parametric modeling method for transportation roads in a new energy wind farm is provided. In a specific embodiment, step S3 specifically includes: S301, performing planar alignment fitting based on the horizontal curve parameters to determine the planar position of the road centerline; S302, performing longitudinal profile fitting based on the vertical curve parameters and determining the elevation of each point on the road centerline in conjunction with the digital elevation model; S303, generating a cross-section template based on the cross-section parameters; S304, positioning and stretching the cross-section template along the road centerline with the determined planar position and elevation to generate the three-dimensional solid model of the road.

[0023] According to an embodiment of the present invention, a three-dimensional parametric modeling method for transportation roads in a new energy wind farm includes, in a specific embodiment, the planar alignment fitting includes fitting straight line segments, circular curve segments, and transition curve segments; the longitudinal profile fitting is based on the quadratic parabola equation.

[0024] According to an embodiment of the present invention, a three-dimensional parametric modeling method for transportation roads in a new energy wind farm is provided. In a specific embodiment, after step S3, step S4 is further included: performing Boolean operations and difference calculations based on the three-dimensional solid model of the road and the digital elevation model to determine the engineering quantity of the road project; the engineering quantity includes at least one of earthwork volume, road surface area, and structure volume.

[0025] According to an embodiment of the present invention, a three-dimensional parametric modeling method for transportation roads in a new energy wind farm is further comprising step S5 in a specific embodiment: automatically generating at least one of the following results based on the three-dimensional solid model of the road: construction drawings, bill of quantities, and BIM model files.

[0026] Secondly, a three-dimensional parametric modeling system for transportation roads in a new energy wind farm includes: a data acquisition and processing module for acquiring wind farm terrain data and generating a digital elevation model; a parametric design module for parametrically defining the transportation road to output a road design parameter set, which includes horizontal curve parameters, vertical curve parameters, and cross-sectional parameters; and a three-dimensional modeling engine module for running a fitting algorithm based on the digital elevation model and the road design parameter set to generate a three-dimensional solid model of the road that adapts to the terrain.

[0027] According to a three-dimensional parametric modeling system for transportation roads in a new energy wind farm, in a specific embodiment, the three-dimensional modeling engine module includes a line fitting unit and a cross-section processing unit. The line fitting unit is used to perform planar line fitting and longitudinal section fitting respectively based on the horizontal curve parameters and vertical curve parameters to determine the three-dimensional spatial trajectory of the road centerline. The cross-section processing unit is used to generate a cross-section template based on the cross-section parameters and control the cross-section template to be laid out along the three-dimensional spatial trajectory of the road centerline to construct the three-dimensional solid model of the road.

[0028] According to a three-dimensional parametric modeling system for transportation roads in a new energy wind farm, in a specific embodiment, it further includes an engineering quantity calculation module, which is used to calculate at least one of the following engineering quantities: earthwork volume, pavement area, and structure volume, based on the three-dimensional solid model of the road and the digital elevation model.

[0029] According to a three-dimensional parametric modeling system for transportation roads in a new energy wind farm, in a specific embodiment, it further includes a result output module, which is used to drive the generation of at least one of the following results based on the three-dimensional solid model of the road: construction drawings, bill of quantities, and BIM model files.

[0030] To facilitate understanding of the above technical solutions of the present invention, the following detailed description of the above technical solutions of the present invention will be provided through specific usage methods.

[0031] In practical use, the three-dimensional parametric modeling method for transportation roads of new energy wind farms according to the present invention includes the following steps: According to the requirements of the patent technology disclosure, the specific implementation steps of the invention are provided as follows: I. Data acquisition and processing stage: Terrain data acquisition: Use UAV aerial survey technology to collect wind farm terrain data and obtain a high-precision digital elevation model.

[0032] II. Parametric Modeling Stage: Road Alignment Design: Road linear design is mainly divided into three alignment types: horizontal curves, vertical curves, and cross-sectional lines. The parametric definitions are as follows: Control Points, Intersection Points (JD): The intersection point of the extended straight segments of two straight segments of the road horizontal curve is the core control point for "straight segment connection" in the design of the road path horizontal curve.

[0033] The transition point (ZH) is the point where a straight line meets a transition curve. It is the starting point of the transition from straight line to transition curve and is responsible for the curvature transition between the straight line and the transition curve.

[0034] The transition point (HY) is the point where the transition curve connects to the circular curve. It is the starting point of the transition curve to the circular curve, realizing a smooth transition from the curvature of the transition curve to the constant curvature of the circular curve.

[0035] Midpoint (QZ): The midpoint of a circular curve is its geometric center. The straight line connecting ZH and HZ (i.e., the "tangent" of the horizontal curve) passes through the QZ point and is used to control the symmetry and smoothness of the circular curve.

[0036] The transition point (YH) is the point where a circular curve connects with a transition curve. It is the starting point of the transition from a circular curve to a transition curve, achieving a smooth transition from a circular curve with a constant curvature to a transition curve with a decreasing curvature.

[0037] Transition point (HZ): The point where the transition curve connects to the straight line. It is the end point of the "transition curve → straight line" transition, completing the "finishing" of the transition curve curvature to the straight line and ensuring that the vehicle smoothly enters the straight section from the curve.

[0038] Control point, intersection (JD): The intersection of the extended straight segments of two vertical curves of a road is the core control point for "straight segment connection" in the design of vertical curves of a road path.

[0039] R (vertical curve radius): The core design parameter of the vertical curve, which determines the curvature of the curve. The larger the radius, the gentler the curve and the more gradual the slope change; the smaller the radius, the steeper the curve and the more drastic the slope change.

[0040] Tangent length (T): The horizontal distance from the transition point of adjacent slope segments to the start / end point of the vertical curve, used to determine the connection range between straight and curved segments. The calculation logic is as follows: Vertical curve length (L): The arc length from the start to the end point of the vertical curve, reflecting the "length" of the curve segment. In circular vertical curves...

[0041] External distance (E): The vertical distance between the midpoint of the vertical curve and the tangent at the point of change of slope. It reflects the vertical offset of the curve and is used to ensure driving visibility. For example, the external distance needs to be increased for convex curves to ensure the visibility of vehicles on uphill sections.

[0042] The road cross-section is divided into left and right cross-sections along the centerline. The following example uses the left cross-section: Mileage (K): The length from the starting point of the road to the target point, used for positioning along the road centerline.

[0043] Left cross-section roadbed width (W): refers to the width of the left-hand driving lane of the road. For example, for a single-lane road, it is the width from the center to the roadside slope.

[0044] Left slope ratio (I): refers to the ratio of the slope height to the bottom width. The slope length is usually automatically calculated based on the original terrain and road width.

[0045] 3. Three-dimensional model generation stage: In the process of parametric modeling of road entities, a variety of algorithms will be used to realize the conversion from design parameters to three-dimensional entity models: 1. Planar line fitting: (1) Straight line segment fitting: According to the given starting coordinates (x1, y1) and ending coordinates (x2, y2), linear interpolation is used to calculate the coordinates of any point P(x, y) on the straight line. Let the parameter t (0≤t≤1), then: x=x1+t(x2−x1), y=y1+t(y2−y1).

[0046] (2) Fitting a circular curve segment: Given the coordinates of the center (x0, y0) and the radius R, any point P(x, y) on the circular curve can be calculated by polar coordinate transformation. Let the central angle be θ in radians, then: x = x0 + Rcosθ, y = y0 + Rsinθ.

[0047] (3) Fitting of transition curve segments: Transition curves often use spirals, whose curvature changes linearly with the length of the curve. A local coordinate system is established with the starting point of the spiral as the origin and the direction of the tangent at the starting point as the x-axis. The local coordinates (x′, y′) of any point on the curve can be calculated by integration or approximate formulas.

[0048] 2. Longitudinal Profile Fitting: Vertical curves are classified as convex or concave, and are generally approximated by a quadratic parabola. Given the station number s0 of the slope change point, its elevation, and the radius R of the vertical curve, the length L of the vertical curve can be calculated as L = R⋅ω (ω is the algebraic difference in slope between adjacent slope segments). The starting station number S of the vertical curve... S = S0−L / 2, End point station S e =S0+L / 2.

[0049] Establish a local coordinate system with the point of slope change as the origin. The equation of the parabola is: h = (4E / L) 2 )x 2 Where E is the external distance, i.e., the perpendicular distance between the midpoint of the vertical curve and the tangent; L is the length of the vertical curve; and x is the horizontal distance from the calculation point to the slope change point. After calculating the local elevation, it is converted to the elevation in the global coordinate system through coordinate transformation.

[0050] IV. Output Stage: Construction Drawing Generation: Automatically outputs floor plans, longitudinal sections, and cross sections; Report and Document Output: Generates technical documents such as bill of quantities and material statistics tables; BIM Model Delivery: Outputs 3D model files compatible with mainstream BIM software.

[0051] In summary, by utilizing the above-mentioned technical solutions of this invention, a parametric road 3D modeling method and system are established, realizing the improvement of transportation road design from two-dimensional plane to three-dimensional space. This enables the design scheme to accurately fit complex mountainous terrain, significantly reducing construction changes and rework caused by design errors. Furthermore, it streamlines the digital process from design and engineering quantity calculation to output, improving design efficiency and collaboration capabilities, and providing reliable technical support for the overall quality, cost, and schedule control of wind farm construction projects.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-dimensional parametric modeling method for transportation roads in new energy wind farms, characterized in that, Includes the following steps: S1. Acquire wind farm topographic data and generate a digital elevation model; S2. Parametrically define the transportation roads of the wind farm to obtain a road design parameter set, which includes horizontal curve parameters for defining the road's horizontal alignment, vertical curve parameters for defining the road's longitudinal alignment, and cross-sectional parameters for defining the road's cross-sectional structure; S3. Based on the digital elevation model and the road design parameter set, generate a three-dimensional solid model of the road that adapts to the terrain using a fitting algorithm.

2. The three-dimensional parametric modeling method for transportation roads in new energy wind farms according to claim 1, characterized in that, in, The horizontal curve parameters mentioned in S2 include at least one of the following: intersection point, straight-to-gradient point, gradual-to-round point, midpoint of curve, gradual-to-gradient point, and gradual-to-straight point; the vertical curve parameters include at least one of the following: vertical curve radius, tangent length, vertical curve length, and outer distance; the cross-sectional parameters include mileage, roadbed width, and slope ratio.

3. The three-dimensional parametric modeling method for transportation roads in new energy wind farms according to claim 1, characterized in that, Step S3 specifically includes: S301, performing planar alignment fitting based on the horizontal curve parameters to determine the planar position of the road centerline; S302, performing longitudinal profile fitting based on the vertical curve parameters, and determining the elevation of each point on the road centerline in conjunction with the digital elevation model; S303, generating a cross-section template based on the cross-section parameters; S304, positioning and stretching the cross-section template along the road centerline with the determined planar position and elevation to generate the three-dimensional solid model of the road.

4. The three-dimensional parametric modeling method for transportation roads in new energy wind farms according to claim 3, characterized in that, The planar line fitting includes fitting straight line segments, circular curve segments, and transition curve segments; the longitudinal profile fitting is based on the quadratic parabola equation.

5. A three-dimensional parametric modeling method for transportation roads in new energy wind farms according to claim 1, characterized in that, Following step S3, step S4 is further included: performing Boolean operations and difference calculations based on the three-dimensional solid model of the road and the digital elevation model to determine the engineering quantity of the road project; the engineering quantity includes at least one of earthwork volume, pavement area and structure volume.

6. A three-dimensional parametric modeling method for transportation roads in new energy wind farms according to claim 5, characterized in that, It also includes step S5: based on the road three-dimensional solid model, automatically generate at least one of the following results: construction drawings, bill of quantities, and BIM model files.

7. A three-dimensional parametric modeling system for transportation roads in new energy wind farms, used to implement the method described in any one of claims 1-6, characterized in that, include: The data acquisition and processing module is used to acquire wind farm terrain data and generate a digital elevation model; The parametric design module is used to define the transportation road parametrically to output a road design parameter set, which includes horizontal curve parameters, vertical curve parameters, and cross-section parameters. The 3D modeling engine module is used to run a fitting algorithm based on the digital elevation model and the road design parameter set to generate a 3D solid model of the road that is adapted to the terrain.

8. A three-dimensional parametric modeling system for transportation roads in a new energy wind farm according to claim 7, characterized in that, The 3D modeling engine module includes a line fitting unit and a cross-section processing unit. The line fitting unit is used to perform planar line fitting and longitudinal section fitting according to the horizontal curve parameters and vertical curve parameters, respectively, to determine the 3D spatial trajectory of the road centerline. The cross-section processing unit is used to generate a cross-section template according to the cross-section parameters, and control the cross-section template to be laid out along the 3D spatial trajectory of the road centerline to construct the 3D solid model of the road.

9. A three-dimensional parametric modeling system for transportation roads in a new energy wind farm according to claim 7, characterized in that, It also includes an engineering quantity calculation module, which is used to calculate at least one of the following engineering quantities of road engineering: earthwork volume, pavement area, and structure volume, based on the three-dimensional solid model of the road and the digital elevation model.

10. A three-dimensional parametric modeling system for transportation roads in a new energy wind farm according to claim 7, characterized in that, It also includes a result output module, which is used to drive the generation of at least one of the following results based on the road 3D solid model: construction drawings, bill of quantities, and BIM model files.

Images