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Parametric modeling and design optimization method for railway engineering construction shortcut

A technology of parametric modeling and construction access roads, applied in the field of geographic information systems, can solve the problems of difficult rapid design and intuitive display of construction access roads, and achieve the effect of optimizing design results

Pending Publication Date: 2019-12-13
CHINA RAILWAY DESIGN GRP CO LTD
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Problems solved by technology

[0005] In order to solve the problem that it is difficult to quickly design and intuitively display construction access roads in steep railway engineering environments, the present invention provides a parametric modeling and design optimization method for construction access roads in railway engineering based on spherical three-dimensional scenes

Method used

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  • Parametric modeling and design optimization method for railway engineering construction shortcut
  • Parametric modeling and design optimization method for railway engineering construction shortcut
  • Parametric modeling and design optimization method for railway engineering construction shortcut

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Embodiment 1

[0078] see Figure 5 , During the construction of a bridge in a certain railway project, Pier No. 19 is close to the riverside, the foundation top is 8.2m higher than the design water level, surrounded by high and steep slopes that are more than 40m higher than the foundation top, and the hillside is steep and close to 45 degrees. The construction site is narrow and the construction environment is steep and complex. It is necessary to build a construction access road to facilitate the entry of machinery and material transportation.

[0079] By collecting the terrain and image data of the construction site, DEM and DOM (digital ortho image) are generated, and a 3D model of the bridge is established to generate a spherical 3D scene.

[0080] Modeling construction access roads in a spherical three-dimensional scene includes three steps: ① Establish a conversion method from the geographic coordinate system to the projected coordinate system and from the projected coordinate system...

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Abstract

The invention discloses a parametric modeling and design optimization method for a construction shortcut under a geographic coordinate system. The method comprises the following steps: establishing aconversion relationship from the geographic coordinate system to a projection coordinate system and a conversion relationship from the projection coordinate system to the geographic coordinate system;2) carrying out parametric modeling of the construction shortcut, wherein slope types are judged, slope contour lines are obtained, a construction shortcut model is generated, geographic coordinate system data are converted into a projection coordinate system for mathematical calculation in real time during parametric modeling of a construction shortcut, and after parametric modeling calculation,a calculation result is converted into a geographic coordinate system for display in real time; and 3) outputting a modeling design result, and optimizing the design result. The construction shortcutmodel generated by the method can be directly edited and modified in a three-dimensional scene, so that the construction shortcut slope is effectively prevented from being intersected with other models, and design result optimization is realized; according to the method, the construction shortcut model and the shortcut local terrain modification data are generated at the same time, and terrain data can be modified.

Description

technical field [0001] The invention belongs to the field of geographic information systems, in particular to a parametric modeling and design optimization method for a railway construction access road. Background technique [0002] The selection of existing railway construction access roads mainly relies on two-dimensional CAD drawings. By drawing the access road route and superimposing analysis with contour data, the project cost information can be obtained after Boolean operations with terrain data, so as to meet the requirements of the main construction. Minimize workload as much as possible. However, this selection method is not intuitive enough, which is not conducive to the reporting of design results and the understanding of non-professionals, and greatly reduces the efficiency of multi-disciplinary collaborative design. In addition, since the contour data is a discretization of continuous terrain data and a thin simulation of real data, the data information such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00
Inventor 赵文黄漪张恒韩祖杰王华宁新稳范登科
Owner CHINA RAILWAY DESIGN GRP CO LTD
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