Three-dimensional railroad bed modeling method

A three-dimensional modeling and roadbed technology, applied in 3D modeling, image data processing, special data processing applications, etc., can solve problems such as inability to perform three-dimensional forward design of roadbeds, increasing engineering measurement costs, and inaccurate engineering calculation. Achieve the effect of avoiding unreasonable engineering measures, improving design efficiency and accurate statistics
CN107945264AActive Publication Date: 2018-04-20CHINA RAILWAY DESIGN GRP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA RAILWAY DESIGN GRP CO LTD
Publication Date
2018-04-20

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Abstract

The invention discloses a three-dimensional railroad bed modeling method including: S1, preparing the essential data of railroad bed modeling; S2, determining a demarcation point of an embankment anda cutting at the side of a left road shoulder L1; S3, determining the railroad bed form of a section point0 to the point1; S4, fixing a corresponding railroad bed standard cross section; S5, generating respective closed bodies by sweeping; S6, performing Boolean operation; S7, completing the railroad bed model of all sections at the side of the L1; S8, completing the railroad bed model at the sideof a right road shoulder L2; S9, deleting L1, L2, the embankment, the cutting standard cross section and a 3D terrain surface M; and S10, obtaining the three-dimensional model of railroad bed. According to the high-precision three-dimensional terrain and the road shoulder line, the method determines railroad bed sections by a certain rule, and generates entities by sweeping the railroad bed standard cross section in the corresponding sections, and obtains a railroad bed fitted with the terrain by the Boolean operation. The method is high in modeling efficiency, avoids the additional manual measurement, and is accurate in engineering quantity calculation.
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Description

technical field

[0001] The invention relates to the technical field of roadbed engineering modeling, in particular to a three-dimensional modeling method for railway roadbeds. Background technique

[0002] The 3D modeling of railway subgrade is a technology that uses computer technology to combine subgrade information with visualization tools in a 3D environment for subgrade research. This technology can intuitively display the results of railway two-dimensional design with three-dimensional graphics, and people can provide insights on the design scheme with the help of intuitive three-dimensional graphics, which provides convenience for the cooperation of various disciplines, and also provides scheme reviewers and high-level decision makers A more reliable basis for decision-making.

[0003] Traditional railway subgrade 3D modeling adopts the method of constructing 3D subgrade model based on 2D design cross section. This design method can be understood as a cross-section ...

Claims

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