Earth volume calculation method based on improved prism method
A calculation method and technology of earthwork volume, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve problems such as different design elevations, and achieve a wide range of applications
Pending Publication Date: 2021-12-14
NO 5 ENG OF CHINA RAILWAY 19 BUREAU GRP +2
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However, in actual projects, according to the needs of terrain and design requirements, the design elevations required by different areas in the design surface are often different.
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[0044] The following descriptions are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention. The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0045] Examples, see Figure 1 to Figure 4 Shown: an improved prism-based earthwork calculation method, the specific steps are as follows:
[0046] Input the 3D point cloud data scanned in the field to generate the original terrain digital ground model;
[0047] Input the point information contained in the design drawing to generate a digital ground model of the design surface;
[0048] Construct the original terrain irregular triangulation network through the original terrain digital ground model; construct the design surface irregular triangulation network through the design surface digital ground model;
[0049] Calculation of earthwork volume based on the original terrain irregular triangulation and de...
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The invention provides an earth volume calculation method based on an improved prism method, and the method comprises the steps: (1) constructing an original terrain digital terrain model and a design surface digital terrain model according to three-dimensional point cloud data and design surface point location data; (2) constructing an original terrain irregular triangulation network through the original terrain digital terrain model, and constructing a design surface irregular triangulation network through the design surface digital terrestrial model; (3) sequentially iterating original terrain triangles in the original terrain irregular triangulation network, judging whether a topological relation exists between the original terrain triangle and a design surface triangle in the design surface irregular triangulation network or not in iteration, and calculating the earth volume according to the current topological relation; and (4) accumulating results obtained by calculation to obtain total earth volume information. The method is established on the basis of the digital terrain model, the natural terrain information is described more accurately, the problem of earth volume calculation repeatability when the design surface has different elevations is effectively solved, and the application range of the method is wide.
Description
technical field [0001] The invention belongs to the technical field of earthwork calculation, and mainly relates to an earthwork calculation method based on an improved prism method. Background technique [0002] Accurately calculating the amount of earthwork and then allocating manpower and materials according to the results is a very important part of construction, which is related to important issues such as construction progress and project cost. At present, the calculation of the design surface in engineering is mostly based on the calculation of the fixed elevation. However, in actual projects, according to the needs of terrain and design requirements, the design elevations required by different areas in the design surface are often different. Therefore, it is of great practical significance to study how to quickly and efficiently calculate earthwork volume for different design elevations. [0003] The digital terrain model (DTM) refers to the ground surface expresse...
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IPC IPC(8): G06F30/23G06F30/13
CPCG06F30/23G06F30/13
Inventor 关喜彬李如仁陶琦周宝春韩希平王松柏王刚国玉龙黄德华李守嘉冀耀宇孙佳庆潘智赵宏宇
Owner NO 5 ENG OF CHINA RAILWAY 19 BUREAU GRP